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-   -   shock detection in the Riemann problems(specially in the stationary contact problems) (https://www.cfd-online.com/Forums/main/78027-shock-detection-riemann-problems-specially-stationary-contact-problems.html)

smkhan July 10, 2010 04:29

shock detection in the Riemann problems(specially in the stationary contact problems)
 
Hi!
i am using own code. actually i m working on 1_D Riemann Problems, conditions are domain length=1.0, interface x=0.8,RHO_L=1.0,U_L=-19.59745,P_L=1000and
RHO_R=1.0,U_R=-19.59745,P_R=0.01. L stands for left and R stands for right and t=0.012.

DoHander July 10, 2010 08:24

First you should have an analytical solution for your problem if you don't have one (you can compare this with the numerical one):

J.D. Anderson - Modern compressible flow.

Second - if your numerical solutions oscillates you probably have an implementation problem: maybe with your boundary conditions or maybe with the order of the numerical scheme you use. For a second order scheme (and high orders) you must use limiters functions in order to remove the oscillations (or you can try with a very fine mesh).

Do


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