I am using the compressible flow solver for NS. I want to give static pressure 'p0eInf' on my outlet, i have defined its value in parameters . Can you help me check out my example? By the way, i don't know how to set 'WallAdiabatic' boundary conditions ,can you help me check out my example?

Sometimes when i run the calculation,it will report an error called 'vacuum is generated by given data'.If i change the TimeStep , it will calculate some steps.How to explain it?