Search found 25 matches

by stefann
Mon Dec 01, 2014 6:31 pm
Forum: code_saturne usage
Topic: Compressible flow inlet not matching boundary conditions
Replies: 10
Views: 7726

Re: Compressible flow inlet not matching boundary conditions

Hi: I created a really simple test case of a 0.2m cubed domain with periodic y and z boundaries to show you what I mean. See attached cube.tar.gz Inlet boundary conditions: Imposed inlet V = 500 m/s (normal to inlet) P = 500 000.0 Pa T = 1200.0 K Outlet boundary conditions: Subsonic Outlet P = 250 0...
by stefann
Fri Nov 28, 2014 3:28 pm
Forum: code_saturne usage
Topic: Compressible flow inlet not matching boundary conditions
Replies: 10
Views: 7726

Re: Compressible flow inlet not matching boundary conditions

Has anyone looked into this or noticed his behaviour?
by stefann
Wed Nov 19, 2014 7:49 pm
Forum: code_saturne usage
Topic: Steady state compressible flow
Replies: 2
Views: 4821

Steady state compressible flow

I noticed that the combination of steady-state and compressible is not possible in the 3.3.2 GUI. Is there an example available of how to do this using user scripts?
by stefann
Fri Nov 14, 2014 3:35 pm
Forum: code_saturne usage
Topic: Tutorial about the coupling simulation with SYRTHES
Replies: 15
Views: 12299

Re: Tutorial about the coupling simulation with SYRTHES

Thanks for the suggestion. I gave it a try but I still get a segmentation fault when I run regardless of which domain partition option I choose. I am running with 1 processor so I am not sure it uses any domain partitioning.


Stefan
by stefann
Wed Nov 12, 2014 6:25 pm
Forum: code_saturne usage
Topic: Compressible flow inlet not matching boundary conditions
Replies: 10
Views: 7726

Compressible flow inlet not matching boundary conditions

I have a 2D compressible flow model of three stationary airfoils (one stage of a turbine). I have periodic boundaries on the top/bottom (Y+ to Y-), symmetry Z+/Z- of the fluid domain, imposed inlet with velocity/temperature/pressure set, and subsonic outlet with pressure defined. Even long after sta...
by stefann
Tue Nov 11, 2014 3:27 pm
Forum: code_saturne usage
Topic: Tutorial about the coupling simulation with SYRTHES
Replies: 15
Views: 12299

Re: Tutorial about the coupling simulation with SYRTHES

Hi there: I tried with the stack size you recommend and even tried adding an order of magnitude. The results are the same: ./valgrind --main-stacksize=100000000 --leak-check=full ./syrthes -d tmp.data --log /home/stefan/test/3disks2D/solid/listing_syrthes ==57075== Memcheck, a memory error detector ...
by stefann
Fri Nov 07, 2014 8:00 pm
Forum: code_saturne usage
Topic: Boundary Condition Help
Replies: 1
Views: 2206

Boundary Condition Help

Hello experts: I have an airfoil test case (with validated data from instrumentation) that I would like to use to validate Code_Saturne. The given information is as follows: INLET: - Total Temperature - Total Pressure - Velocity magnitude (with angle) Outlet: - Total Temperature (same as inlet total...
by stefann
Fri Oct 31, 2014 7:05 pm
Forum: code_saturne usage
Topic: Variable viscosity mathematical expression editor
Replies: 1
Views: 1488

Variable viscosity mathematical expression editor

I have a compressible model and would like to define a simple power law for the viscosity as a function of the temperature ratio (Tk/Trefk). When I go into the user expression, TempK is not one of the options available for Predefined Symbols. In fact, even the examples tab has examples which use Tem...
by stefann
Fri Oct 31, 2014 3:16 pm
Forum: code_saturne usage
Topic: Error Running a Simulation of a Cylinder
Replies: 6
Views: 3681

Re: Error Running a Simulation of a Cylinder

Hello:

My mistake, I didn't read the error message over carefully. I agree in this instance that the error message is fairly clear. Perhaps we can also output also the line number and input file name that caused the error?

Stefan
by stefann
Fri Oct 31, 2014 3:14 pm
Forum: code_saturne usage
Topic: gamma, Cv, and Cp
Replies: 3
Views: 2720

gamma, Cv, and Cp

Hello: With other CFD solvers, we are normally able to input two of the three: gamma (Cp/Cv), isobaric specific heat Cp, and/or isochoric specific heat Cv. In the GUI I only see the ability to input Cp. 1) Feature request: Can the GUI be updated to allow gamma and/or Cv? 2) Can someone provide an ex...