|January 7, 2013, 06:15||
Right Eigen Vector Matrix
Join Date: Nov 2012
Posts: 5Rep Power: 4
I am solving 1D shock tube SOD problem by using Harten modified flux TVD scheme.
For Harten's modified flux TVD scheme, I am using Right Eigen Vector Matrix (and its inverse) of Hoffmann book chapter 12 page no. 104, equation 12-29 (see attached file).
For this matrix my code is stable for CFL<1.
I also tried to use Right Eigen Vector Matrix (and its inverse) of "Lecture notes for 24th Computational Fluid Dynamics" (March 15-19, 1993; H. Deconinck) Section 4.1 page no. 55, equation 4.6.
For this matrix my code is stable till CFL <0.25 after that it becomes unstable.
1. Does selection of Right Eigen Vector matrix and it's inverse affect the scheme stability?
2. Have anyone tried both Right Eigen Vector Matrix?
Waiting for your prompt reply.
Thanks and Regards
|Thread||Thread Starter||Forum||Replies||Last Post|
|need the eigen vectors and their inverses for 2D Euler equations||Ashley||Main CFD Forum||4||July 16, 2009 12:09|
|eigen value analysis for higher order schemes||Shyam||Main CFD Forum||0||June 9, 2008 22:20|