CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

TVD and turbulence models

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 18, 2008, 21:53
Default TVD and turbulence models
  #1
Shuo
Guest
 
Posts: n/a
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
  Reply With Quote

Old   September 19, 2008, 02:18
Default Re: TVD and turbulence models
  #2
nd
Guest
 
Posts: n/a
may be it is doesn't satisfy entropy condition. use monotone
  Reply With Quote

Old   September 19, 2008, 02:55
Default Re: TVD and turbulence models
  #3
Shuo
Guest
 
Posts: n/a
you mean something like MUSCL?
  Reply With Quote

Old   September 19, 2008, 10:57
Default Re: TVD and turbulence models
  #4
nd
Guest
 
Posts: n/a
yup,
  Reply With Quote

Old   September 19, 2008, 22:40
Default Re: TVD and turbulence models
  #5
Axel Rohde
Guest
 
Posts: n/a
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.
  Reply With Quote

Old   September 19, 2008, 23:18
Default Re: TVD and turbulence models
  #6
shuo
Guest
 
Posts: n/a
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
  Reply With Quote

Old   September 20, 2008, 08:30
Default Re: TVD and turbulence models
  #7
Axel Rohde
Guest
 
Posts: n/a
Sure! - Or contact me through my web site directly.
  Reply With Quote

Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 00:01.