Dear friends,
Please find enclosed some comparisons performed between two 3D approaches for atmospheric
dispersion. These models are Code Saturne (CFD RANS) and a LPDM (Lagrangian Particle Dispersion Model) called MSS.
We performed this comparison in the field of a working group dedicated to 3D modelling of atmospheric dispersion (French Ministry of Environment) on a “virtual site”, which means that no experimental data are available.
This case involves a gaseous release of propane (dense gas) oriented in the direction of an obstacle during 10 minutes. Some obstacles (buildings and a long wall) are located within the computational domain.
Input profiles of wind, turbulence and temperature are related to a stable weather condition (stability F in Pasquill classification and 3 m/s at 10 m above ground level).
Videos should be here-after. The same scales have been considered for concentrations at 0.5m above ground level and isosurfaces are both related to lower flammable limit of propane.
Regards.
Comparison of two 3D approaches for atmospheric dispersion
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As this forum is intended to post modelling examples, for better clarity, posts may be edited, and questions may be removed in some cases once the parent is updated.
As this forum is intended to post modelling examples, for better clarity, posts may be edited, and questions may be removed in some cases once the parent is updated.
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Commanay Julien
Comparison of two 3D approaches for atmospheric dispersion
- Attachments
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- LPDM_LFL.avi
- (355.35 KiB) Downloaded 1073 times
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- Code_Saturne_LFL.avi
- (5.86 MiB) Downloaded 1056 times
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- LPDM_50CM.avi
- (2.13 MiB) Downloaded 1062 times
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- Code_Saturne_50CM.avi
- (8.29 MiB) Downloaded 1042 times