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Old   February 18, 2009, 23:56
Default Turbulence modelling
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Morshed Alam
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Which turbulence model is suitable for simulating high temperature(1000K) supersonic flow? I am using K-epsilon now. But it is underpredicting the axial velocity and mach number.

Morshed
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Old   February 20, 2009, 12:16
Default Re: Turbulence modelling
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Harish
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Which K-epsilon model are you employing ? If it is some recent model and its not performing well, try the K-omega family of models.
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Old   February 21, 2009, 14:45
Default Re: Turbulence modelling
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JK
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Also, not predicting the axial velocity can be related to a diffusive discretization scheme. If you're velocities are 'slowing' down more quickly than you would like along the axial direction, perhaps change the discretization from 2nd order to a compressive scheme (i.e. upwinding - which has its own diffusion problems).
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Old   February 22, 2009, 19:11
Default Re: Turbulence modelling
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Morshed Alam
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Thanks to both of you Harish and JK
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