[jacksparrow1492]

Dear Sir or Madam:

Hello!
I am a graduate student in Math department, recently I am doing a project about shock waves interaction.
I have a question about shock wave interaction, which confused me for a long time. Please find the slides attached.

We designed an experiment to make two shocks encounter in the middle area, the Lax-Wendroff scheme was used to get the finally updated flow filed. Even though the incident shocks and part of their reflected shocks can captured clearly, all the parameters get dramatically high in the middle area.

More important, I expect the results which are similar with the theory results, you can find the theory shock wave interaction result in the end of that slides.

We think this bad result was caused by the boundary conditions in the output area(or the upper boundary in the middle), and I could not find a good way to fix it.
Could you please give me some comments or suggestions about this problems? I would appreciate if you can help me.

Best Wishes and Kind Regards,
Sun Ligang