{"users":[{"id":-1,"username":"system","name":"system","avatar_template":"/forum/uploads/default/original/2X/c/c3c568ff00045e25ee3c36ae632926c6317072cb.svg","admin":true,"moderator":true,"trust_level":4},{"id":4,"username":"Jacques_Fontaine","name":"Jacques Fontaine","avatar_template":"/forum/letter_avatar_proxy/v4/letter/j/a4c791/{size}.png","admin":true,"trust_level":1},{"id":1060,"username":"cast_nic","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/c/cdc98d/{size}.png","trust_level":0},{"id":686,"username":"florian-simvia","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/f/b487fb/{size}.png","admin":true,"trust_level":2},{"id":5,"username":"Yvan_Fournier","name":"Yvan Fournier","avatar_template":"/forum/letter_avatar_proxy/v4/letter/y/4bbf92/{size}.png","admin":true,"trust_level":1},{"id":180,"username":"daniele","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/d/dfb087/{size}.png","trust_level":1},{"id":1055,"username":"dimitri014","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/d/71c47a/{size}.png","trust_level":1},{"id":328,"username":"PFERRO","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/p/c5a1d2/{size}.png","trust_level":1},{"id":696,"username":"WenhaoZHANG","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/w/cdc98d/{size}.png","trust_level":1},{"id":565,"username":"www233","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/w/ec9cab/{size}.png","trust_level":1},{"id":715,"username":"Nicolas","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/n/67e7ee/{size}.png","trust_level":1},{"id":702,"username":"SIMON_DELANGE","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/s/c2a13f/{size}.png","trust_level":1},{"id":611,"username":"fracenvi","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/f/c37758/{size}.png","trust_level":1},{"id":697,"username":"Xian_Ge","name":"Xian Ge","avatar_template":"/forum/letter_avatar_proxy/v4/letter/x/b2d939/{size}.png","trust_level":1},{"id":664,"username":"Sun_Ziyi","name":"Sun Ziyi","avatar_template":"/forum/letter_avatar_proxy/v4/letter/s/7feea3/{size}.png","trust_level":1},{"id":649,"username":"sophie_Lu","name":"sophie Lu","avatar_template":"/forum/letter_avatar_proxy/v4/letter/s/e495f1/{size}.png","trust_level":1},{"id":578,"username":"saintlyknighted","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/s/a88e4f/{size}.png","trust_level":1},{"id":81,"username":"Antech","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/a/8c91f0/{size}.png","trust_level":1},{"id":655,"username":"MaximeO","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/m/a3d4f5/{size}.png","trust_level":1},{"id":661,"username":"louis.simvia","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/l/cc9497/{size}.png","admin":true,"trust_level":1},{"id":679,"username":"Samuel","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/s/34f0e0/{size}.png","trust_level":1},{"id":535,"username":"ximeng","name":null,"avatar_template":"/forum/letter_avatar_proxy/v4/letter/x/8c91f0/{size}.png","trust_level":1}],"primary_groups":[],"flair_groups":[],"topic_list":{"can_create_topic":false,"filter":"latest","more_topics_url":"/forum/c/code-saturne-usage/6?page=1","per_page":30,"top_tags":[],"topics":[{"fancy_title":"About the code_saturne usage category","id":8,"title":"About the code_saturne usage category","slug":"about-the-code-saturne-usage-category","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2009-09-27T21:01:22.000Z","last_posted_at":"2009-09-27T21:01:22.000Z","bumped":false,"bumped_at":"2009-09-27T21:01:22.000Z","archetype":"regular","unseen":false,"pinned":true,"unpinned":null,"excerpt":"Questions and remarks about code_saturne usage","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":7,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Code_Saturne usage forum guidelines","id":13,"title":"Code_Saturne usage forum guidelines","slug":"code-saturne-usage-forum-guidelines","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2012-02-21T11:13:01.000Z","last_posted_at":"2012-02-21T11:13:01.000Z","bumped":false,"bumped_at":"2012-02-21T11:13:01.000Z","archetype":"regular","unseen":false,"pinned":true,"unpinned":null,"excerpt":"Dear code_saturne users, \nWelcome to the code_saturne usage forum! \nThis section is dedicated to the general usage (how to, suggestions, encountered problems, …) of code_saturne. \nNote that the documentation is available…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":159681,"like_count":0,"has_summary":false,"last_poster_username":"Jacques_Fontaine","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":4,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"LES stability issue on a polyhedral mesh","id":3083,"title":"LES stability issue on a polyhedral mesh","slug":"les-stability-issue-on-a-polyhedral-mesh","posts_count":4,"reply_count":0,"highest_post_number":4,"image_url":null,"created_at":"2026-10-29T12:30:07.728Z","last_posted_at":"2026-10-30T10:25:40.587Z","bumped":true,"bumped_at":"2026-10-30T10:25:40.587Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Title: LES stability issue on a polyhedral mesh \nHello, \nI am running a wall-resolved LES of a 1x1 rod-bundle subchannel with a spacer grid in code_saturne 9.0.0. On one mesh the computation hits a runaway after about 24…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":27,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":1060,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":686,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Gradient limiter v9","id":3082,"title":"Gradient limiter v9","slug":"gradient-limiter-v9","posts_count":4,"reply_count":0,"highest_post_number":4,"image_url":null,"created_at":"2026-10-26T09:20:43.740Z","last_posted_at":"2026-10-27T11:04:00.253Z","bumped":true,"bumped_at":"2026-10-27T11:04:00.253Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI have noticed that gradient limiters can be set by the user in the GUI in v9. \nHowever, I am a bit confused on what the “limiter factor” represents exactly. The keyword “cmligr” does not seem to exist in v9 docu…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":28,"like_count":0,"has_summary":false,"last_poster_username":"florian-simvia","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":180,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":686,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"MPI_ERR_TRUNCATE during halo construction after periodic joining (v9.0.0)","id":3079,"title":"MPI_ERR_TRUNCATE during halo construction after periodic joining (v9.0.0)","slug":"mpi-err-truncate-during-halo-construction-after-periodic-joining-v9-0-0","posts_count":3,"reply_count":1,"highest_post_number":3,"image_url":null,"created_at":"2026-09-07T12:24:55.829Z","last_posted_at":"2026-09-08T07:06:50.561Z","bumped":true,"bumped_at":"2026-09-08T07:06:50.561Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI am running a periodic channel case with code_saturne 9.0.0 and the preprocessing stage aborts with an MPI error immediately after the joining operation. Attachments are restricted to images on this forum, so I …","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":74,"like_count":1,"has_summary":false,"last_poster_username":"cast_nic","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest","description":"Original Poster, Most Recent Poster","user_id":1060,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":686,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Code Saturne & Code Aster","id":3066,"title":"Code Saturne & Code Aster","slug":"code-saturne-code-aster","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2026-07-20T06:23:49.536Z","last_posted_at":"2026-07-21T19:06:07.146Z","bumped":true,"bumped_at":"2026-07-21T19:06:07.146Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hi, \nI have just completed an explicit FSI coupling framework between Code_Saturne and Code_Aster. It runs in a SLURM environment and is available at: \n\n\nThe implementation is already quite functional. However, as with a…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":65,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":1055,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Questions about convection schemes","id":2498,"title":"Questions about convection schemes","slug":"questions-about-convection-schemes","posts_count":3,"reply_count":0,"highest_post_number":3,"image_url":null,"created_at":"2026-06-18T07:40:22.000Z","last_posted_at":"2026-06-22T22:04:07.000Z","bumped":true,"bumped_at":"2026-06-22T22:04:07.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Dear Yvan, \nWhat is the difference between the SOLU centered gradient and SOLU upwind gradient ? \nTo my knowledge (from how it’s done under OpenFOAM) : \n\nwe add to the implicit upwind scheme an explicit correction to the…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":265,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":328,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"A small printing bug in setup.log for the VOF interface compression parameters","id":2495,"title":"A small printing bug in setup.log for the VOF interface compression parameters","slug":"a-small-printing-bug-in-setup-log-for-the-vof-interface-compression-parameters","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2026-06-02T14:36:15.000Z","last_posted_at":"2026-06-03T17:05:21.000Z","bumped":true,"bumped_at":"2026-06-03T17:05:21.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Bonjour, \nI found a small printing bug in setup.log for the VOF interface compression parameters: the values of kdrift and cdrift are printed in reverse order. \nIn cs_vof.cpp, \ncs_log_printf \n(CS_LOG_SETUP, \n_(“\\n” \n"  F…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":3345,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":696,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Non-physical pressure difference in an annular porous media zone (Pipe Flow)","id":2493,"title":"Non-physical pressure difference in an annular porous media zone (Pipe Flow)","slug":"non-physical-pressure-difference-in-an-annular-porous-media-zone-pipe-flow","posts_count":5,"reply_count":0,"highest_post_number":5,"image_url":null,"created_at":"2026-05-11T09:32:03.000Z","last_posted_at":"2026-05-14T07:28:20.000Z","bumped":true,"bumped_at":"2026-05-14T07:28:20.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hi everyone, \nI am currently simulating flow through a circular pipe where an annular porous zone is implemented along the interior wall. \nI have defined the physical properties of the porous region using the following f…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":6919,"like_count":0,"has_summary":false,"last_poster_username":"www233","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest","description":"Original Poster, Most Recent Poster","user_id":565,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"How to properly use LTS","id":2489,"title":"How to properly use LTS","slug":"how-to-properly-use-lts","posts_count":9,"reply_count":0,"highest_post_number":9,"image_url":null,"created_at":"2026-04-07T08:47:45.000Z","last_posted_at":"2026-04-30T07:44:57.000Z","bumped":true,"bumped_at":"2026-04-30T07:44:57.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Dear Forum, \nWe are facing issues with the local time stepping for buoyancy driven flow (and conjugate heat transfer). From our understanding the local time step would be calculated as follow : \n\ndtCFL = max( min(CFL*dX/…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":17398,"like_count":0,"has_summary":false,"last_poster_username":"PFERRO","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest","description":"Original Poster, Most Recent Poster","user_id":328,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Poisson equation solution using Code_Saturne solver","id":2491,"title":"Poisson equation solution using Code_Saturne solver","slug":"poisson-equation-solution-using-code-saturne-solver","posts_count":3,"reply_count":0,"highest_post_number":3,"image_url":null,"created_at":"2026-04-21T09:11:22.000Z","last_posted_at":"2026-04-30T07:10:57.000Z","bumped":true,"bumped_at":"2026-04-30T07:10:57.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Good morning, \nI am currently trying to solve a Poisson equation based on a scalar field that I define beforehand within NEPTUNE_CFD. \nMy approach is to reuse the Poisson solver that is originally used for the pressure f…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":8385,"like_count":0,"has_summary":false,"last_poster_username":"Nicolas","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest","description":"Original Poster, Most Recent Poster","user_id":715,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"code_saturne automation","id":2492,"title":"code_saturne automation","slug":"code-saturne-automation","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-04-22T12:54:03.000Z","last_posted_at":"2026-04-22T12:54:03.000Z","bumped":false,"bumped_at":"2026-04-22T12:54:03.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello everyone, \nI would like to share with the community the release of a new tool for code_saturne automation, called csauto: \nPresentation : csauto — Automate code_saturne CFD simulation campaigns \nSource : GitHub - s…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":11189,"like_count":0,"has_summary":false,"last_poster_username":"florian-simvia","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":686,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Water wheels","id":2488,"title":"Water wheels","slug":"water-wheels","posts_count":5,"reply_count":0,"highest_post_number":5,"image_url":null,"created_at":"2026-03-17T09:16:10.000Z","last_posted_at":"2026-04-08T19:43:41.000Z","bumped":true,"bumped_at":"2026-04-08T19:43:41.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI am learning to use “Code Saturne” and I’d like to study/optimize water wheels, do you have any advises to make it work please? \nMany thanks :wink:","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":13014,"like_count":0,"has_summary":false,"last_poster_username":"SIMON_DELANGE","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest","description":"Original Poster, Most Recent Poster","user_id":702,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"time step setting routine (former varpos.f90) in v9?","id":2490,"title":"time step setting routine (former varpos.f90) in v9?","slug":"time-step-setting-routine-former-varpos-f90-in-v9","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2026-04-07T11:55:53.000Z","last_posted_at":"2026-04-07T22:31:19.000Z","bumped":true,"bumped_at":"2026-04-07T22:31:19.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI was used to edit the varpos.f90 routine in v7 for some specific time-step settings. However, this routine is not present anymore in v9. I made a grep of “ischtp” in the src, but could not really understand the …","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":9456,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":180,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Recommandation for polyhedral cells","id":2485,"title":"Recommandation for polyhedral cells","slug":"recommandation-for-polyhedral-cells","posts_count":3,"reply_count":0,"highest_post_number":3,"image_url":null,"created_at":"2026-03-03T08:08:33.000Z","last_posted_at":"2026-03-05T08:18:51.000Z","bumped":true,"bumped_at":"2026-03-05T08:18:51.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"In case of a polyhedral mesh generated by fluent mesher what are the recommendations in term of schemes and linear solver (highly turbulent flow, variable density and CHT) ? \nThe mesh non-orthogonality is less than 70°. \n…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":12825,"like_count":0,"has_summary":false,"last_poster_username":"PFERRO","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest","description":"Original Poster, Most Recent Poster","user_id":328,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Dynamic boundary conditions","id":2483,"title":"Dynamic boundary conditions","slug":"dynamic-boundary-conditions","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2026-01-30T15:11:08.000Z","last_posted_at":"2026-01-31T00:44:07.000Z","bumped":true,"bumped_at":"2026-01-31T00:44:07.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI’m trying to run a case where i impose a varying boundary condition, as i’m trying to model a system where i have a flactuating velocity at the inlet (specifically, i would like to impose a time-varying boundary…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":21881,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":611,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Restarting cold flow simulation introducing combustion model","id":2482,"title":"Restarting cold flow simulation introducing combustion model","slug":"restarting-cold-flow-simulation-introducing-combustion-model","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2026-01-27T11:04:26.000Z","last_posted_at":"2026-01-28T12:44:49.000Z","bumped":true,"bumped_at":"2026-01-28T12:44:49.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI’m trying to collect statistics for a simulation case which runs for a very large number of cells and the combustion module on. \nHenceforth, what i’m doing is running the case first deactivating the combustion t…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":18265,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":611,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Modify  buoyancy-term parameter Pr","id":2480,"title":"Modify  buoyancy-term parameter Pr","slug":"modify-buoyancy-term-parameter-pr","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2026-01-09T16:04:24.000Z","last_posted_at":"2026-01-11T19:05:31.000Z","bumped":true,"bumped_at":"2026-01-11T19:05:31.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Bonjour, \nI am using code_saturne 9.0 to simulate breaking waves on cronos. I would like to modify the buoyancy-term parameter Pr in order to compare my results with other published papers that use OpenFOAM. \nDoes anyone…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":27112,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":696,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"[V8.3 GUI] Unable to change Centering Blend value for Velocity (locked to 1)","id":2481,"title":"[V8.3 GUI] Unable to change Centering Blend value for Velocity (locked to 1)","slug":"v8-3-gui-unable-to-change-centering-blend-value-for-velocity-locked-to-1","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":"https://code-saturne.org/forum/uploads/default/original/2X/5/5bba36248c8aab4b2b8194b14f6742c26402492f.png","created_at":"2026-01-11T09:15:56.000Z","last_posted_at":"2026-01-11T18:55:36.000Z","bumped":true,"bumped_at":"2026-01-11T18:55:36.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello everyone, \nI am currently using Code_Saturne V8.3 to perform an LES simulation with the WALE model. \nI would like to experiment with different numerical schemes for the velocity field. However, I have encountered a…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":21313,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":697,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Issue with Infinite SEM Virtual Box Dimensions (coo_min = -1e30) on Annular Inlet [V9.1]","id":2479,"title":"Issue with Infinite SEM Virtual Box Dimensions (coo_min = -1e30) on Annular Inlet [V9.1]","slug":"issue-with-infinite-sem-virtual-box-dimensions-coo-min-1e30-on-annular-inlet-v9-1","posts_count":5,"reply_count":0,"highest_post_number":5,"image_url":"https://code-saturne.org/forum/uploads/default/optimized/2X/b/bbc17260a17773f5de521fa3adc0c804fd683a71_2_1024x1024.jpeg","created_at":"2026-01-07T03:36:08.000Z","last_posted_at":"2026-01-08T22:53:52.000Z","bumped":true,"bumped_at":"2026-01-08T22:53:52.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello Code_Saturne community, \nI am currently running an LES simulation (WALE model) of a rotating disk cavity with axial through-flow on a cluster (using MPI). I am trying to impose synthetic turbulence at the inlet usi…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":27612,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":664,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Running the model on HPC","id":2478,"title":"Running the model on HPC","slug":"running-the-model-on-hpc","posts_count":4,"reply_count":0,"highest_post_number":4,"image_url":null,"created_at":"2025-12-18T22:42:41.000Z","last_posted_at":"2025-12-27T01:04:47.000Z","bumped":true,"bumped_at":"2025-12-27T01:04:47.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hi all, \nI am running Code_Saturne 8.2 coupled with SSH-Aerosol on an HPC system, and I consistently encounter a runtime error at the last time step of the simulation. \nThe case runs normally for most of the simulation, …","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":31049,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":649,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"T-Junction CHT Internal Coupling Simulation not working with Fillet","id":2476,"title":"T-Junction CHT Internal Coupling Simulation not working with Fillet","slug":"t-junction-cht-internal-coupling-simulation-not-working-with-fillet","posts_count":5,"reply_count":0,"highest_post_number":5,"image_url":null,"created_at":"2025-12-11T16:53:40.000Z","last_posted_at":"2025-12-23T11:41:03.000Z","bumped":true,"bumped_at":"2025-12-23T11:41:03.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hi, I have been trying to set up a CHT internal coupling simulation of a T-Junction in code saturne to measure the temperature gradients in the pipe wall. I have this working in a T-Junction geometry where there is no fi…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":33819,"like_count":0,"has_summary":false,"last_poster_username":"Antech","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":578,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":81,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Code_Saturne and Code_Aster coupling workflow","id":2477,"title":"Code_Saturne and Code_Aster coupling workflow","slug":"code-saturne-and-code-aster-coupling-workflow","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2025-12-12T01:18:26.000Z","last_posted_at":"2025-12-13T03:54:10.000Z","bumped":true,"bumped_at":"2025-12-13T03:54:10.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hi, I am trying to take the thermal loads from my Code_Saturne T_Junction and using that to get thermal stresses on the T-Junction pipe in Code_Aster. I have two med results files from Code_Saturne, which are results_Bou…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":25459,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":578,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Reading of chemistry profiles file","id":2473,"title":"Reading of chemistry profiles file","slug":"reading-of-chemistry-profiles-file","posts_count":9,"reply_count":0,"highest_post_number":9,"image_url":null,"created_at":"2025-10-12T20:52:47.000Z","last_posted_at":"2025-10-30T01:12:37.000Z","bumped":true,"bumped_at":"2025-10-30T01:12:37.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Dear all, \nI am doing the simulation about gas chemistry for in CS9.0. When I run the model, meteo file can be read normally, but chemistry profiles file data only can be read in the third hours . \nHowever, before when I…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":71897,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":649,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Particle statistics crash","id":2474,"title":"Particle statistics crash","slug":"particle-statistics-crash","posts_count":5,"reply_count":0,"highest_post_number":5,"image_url":null,"created_at":"2025-10-14T10:39:44.000Z","last_posted_at":"2025-10-15T11:47:14.000Z","bumped":true,"bumped_at":"2025-10-15T11:47:14.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello. I face the strange problem with particle statistics. The case is a simple gas duct with inlet, common outlet and particle outlet. Unless there is no particle statistics collected all things are fine. Gas phase cal…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":34188,"like_count":0,"has_summary":false,"last_poster_username":"Antech","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest","description":"Original Poster, Most Recent Poster","user_id":81,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Question about atmospheric module","id":2472,"title":"Question about atmospheric module","slug":"question-about-atmospheric-module","posts_count":3,"reply_count":0,"highest_post_number":3,"image_url":null,"created_at":"2025-10-09T15:22:58.000Z","last_posted_at":"2025-10-13T09:49:58.000Z","bumped":true,"bumped_at":"2025-10-13T09:49:58.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI’m working on a dispersion study in an urban area, and I would like to analyze the impact of the turbulent schmidt number Sc_T of the transported scalar over the concentration fields. \nDuring some previous tests…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":33436,"like_count":0,"has_summary":false,"last_poster_username":"MaximeO","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest","description":"Original Poster, Most Recent Poster","user_id":655,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"MESH of complex geometry","id":2455,"title":"MESH of complex geometry","slug":"mesh-of-complex-geometry","posts_count":10,"reply_count":0,"highest_post_number":10,"image_url":null,"created_at":"2025-07-22T22:30:56.000Z","last_posted_at":"2025-10-12T19:47:29.000Z","bumped":true,"bumped_at":"2025-10-12T19:47:29.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI want to process complex urban ground as a MESH simulation. Now I have generate MESH of buildings successfully from DSM file. In this case, how can I extract the air area above the city? I have tried to generate…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":126806,"like_count":0,"has_summary":false,"last_poster_username":"sophie_Lu","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest","description":"Original Poster, Most Recent Poster","user_id":649,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Frequent Poster","user_id":661,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":679,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Inquire on combustion module","id":2471,"title":"Inquire on combustion module","slug":"inquire-on-combustion-module","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-10-03T13:01:05.000Z","last_posted_at":"2025-10-03T13:01:05.000Z","bumped":false,"bumped_at":"2025-10-03T13:01:05.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI got a question regarding the combustion module and how the components ym_fuel, ym_oxyd and ym_prod are obtained and transported in the case where i adopt diffusion flames. From what i understood, their evaluati…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":67271,"like_count":0,"has_summary":false,"last_poster_username":"fracenvi","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":611,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Restart file not working (v.7)","id":2470,"title":"Restart file not working (v.7)","slug":"restart-file-not-working-v-7","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2025-09-29T10:10:36.000Z","last_posted_at":"2025-09-29T21:45:32.000Z","bumped":true,"bumped_at":"2025-09-29T21:45:32.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Hello, \nI’m facing a weird issue as i’m trying to run a restarted calculation, setting up the restart folder in the cs_user_scripts.py file. Every time i try to run the simulation, it immediately ends with the error: \nPr…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":42375,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":611,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"Question on Steady vs Unsteady RANS in Code_Saturne","id":2468,"title":"Question on Steady vs Unsteady RANS in Code_Saturne","slug":"question-on-steady-vs-unsteady-rans-in-code-saturne","posts_count":6,"reply_count":0,"highest_post_number":6,"image_url":null,"created_at":"2025-09-16T10:47:37.000Z","last_posted_at":"2025-09-28T21:24:50.000Z","bumped":true,"bumped_at":"2025-09-28T21:24:50.000Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Dear Yvan, \nI would like to clarify how steady and unsteady RANS are selected in Code_Saturne. Am I correct that choosing Constant or Adaptive time step corresponds to unsteady simulations, while Steady (local time step)…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":80116,"like_count":0,"has_summary":false,"last_poster_username":"Yvan_Fournier","category_id":6,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":535,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":81,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":5,"primary_group_id":null,"flair_group_id":null}]}]}}