CFD Online Logo CFD Online URL
Home > Forums > General Forums > Main CFD Forum

Exit Boundary Conditions N-S equations

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   July 1, 2005, 19:58
Default Exit Boundary Conditions N-S equations
Posts: n/a
I am trying to solve the unsteady compressible boundary layer problem for subsonic flow using FVM. What are the outflow boundary conditions i can specify to get accurate solution. At the end of the plate still viscous effects are present. so, what are extra boundary conditions i have to mention compare to Euler equations at outflow.

Thank you.
  Reply With Quote

Old   July 2, 2005, 02:32
Default Re: Exit Boundary Conditions N-S equations
Jaan Pu
Posts: n/a
the boundary conditions are solely depends on the outflow environment. solid or tranmissive maybe something you should look for.
  Reply With Quote

Old   July 2, 2005, 03:10
Default Re: Exit Boundary Conditions N-S equations
Posts: n/a
Dear Lavan,

A Reimann BC would have been a good option, but theoretically this is valid only for isentropic case and hence you cannot use it for an 'accurate' solution. Nevertheless you can try it out for yourself. Another option is to extend your domain a little further wherein the extended part of the plate is given an inviscid b.c after which you can use the Reimann B.C. safely.

Hope this helps


  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wind turbine simulation Saturn CFX 58 July 3, 2020 01:13
mass flow in is not equal to mass flow out saii CFX 12 March 19, 2018 05:21
Putting Boundary Conditions in ANSYS CFX 12.1 palofpinaki CFX 7 January 5, 2015 05:51
Algorithm for coupled pde with all flux boundary conditions benk Main CFD Forum 3 December 28, 2010 05:09
Boundary Conditions for 2 d N S equations vsampath Main CFD Forum 0 October 15, 2010 13:36

All times are GMT -4. The time now is 02:04.