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

About the MUSCL scheme for compressible simulations

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

LinkBack Thread Tools Display Modes
Old   March 19, 2013, 08:47
Default About the MUSCL scheme for compressible simulations
New Member
Lipo Wang
Join Date: Dec 2012
Posts: 14
Rep Power: 6
nickna is on a distinguished road
Dear all,
I am studying the MUSCL (finite difference) scheme with the Steger-Warming splitting to solve compressible flows. One step is not clear for me.
The scheme is
U(n+1)_i,j=U(n)_i,j - dt/dx(F_i+1/2,j-F_i-1/2,j) (1D case)
where F can be split into two parts. For example F_i+1/2,j= F^+_i+1/2,j + F^-_i+1/2,j

Further, F^+_i+1/2,j=F^+(U_i+1/2,j_L), F^-_i+1/2,j=F^-(U_i+1/2,j_R)

If we go inside to the expression of F^+(U_i+1/2,j_L), we see that it is expressed by the components of U_i+1/2,j_L and the eigenvalues of the coef matrix. My question is how to evaluate these eigenvalues? Shall I use to Roe average (between grid i and i+1) or just use the components of U_i+1/2,j_L to get u, u+a and u-a as these eigenvalues?

nickna is offline   Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Trouble when using MUSCL scheme on ONERA M6 wing Aurélien FLUENT 2 January 23, 2013 08:42
Numerical viscosity due to the MUSCL and HLL coulpled scheme sonsiest Main CFD Forum 0 May 23, 2011 15:37
MUSCL scheme implementation ANPDEstudent Main CFD Forum 1 June 26, 2010 23:57
extrapolation in MUSCL scheme Chandra Main CFD Forum 6 February 14, 2007 12:21
MUSCL scheme B. Nilsson Main CFD Forum 1 October 30, 1998 03:11

All times are GMT -4. The time now is 10:23.