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Old   September 18, 2008, 20:53
Default TVD and turbulence models
  #1
Shuo
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Is it compatible to use a turbulence model with TVD schemes given that the latter is an inherently artificial viscosity method? I am trying to model a supersonic free jet using TVD schemes and the jet doesn't seem to decay.

Shuo
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Old   September 19, 2008, 01:18
Default Re: TVD and turbulence models
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nd
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may be it is doesn't satisfy entropy condition. use monotone
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Old   September 19, 2008, 01:55
Default Re: TVD and turbulence models
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Shuo
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you mean something like MUSCL?
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Old   September 19, 2008, 09:57
Default Re: TVD and turbulence models
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nd
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yup,
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Old   September 19, 2008, 21:40
Default Re: TVD and turbulence models
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Axel Rohde
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That is the correct result!! - TVD schemes have such low numerical viscosity that a shear layer will not develop if you are solving Euler only. I ran the same simulation (supersonic jet) several years ago while testing my TVD code to obtain a measure of its numerical viscosity, and I was very pleased with the result. An underlying TVD scheme is ideal for a compressible Navier Stokes code, because you see the effects of physical viscosity only.
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Old   September 19, 2008, 22:18
Default Re: TVD and turbulence models
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shuo
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Hi Axel

Is it Ok if I give you my email and ask a few questions regarding the problems that I have been having with my supersonic jet simulations?

Shuo
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Old   September 20, 2008, 07:30
Default Re: TVD and turbulence models
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Axel Rohde
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Sure! - Or contact me through my web site directly.
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