Simulation of Shock Wave in Shock tube in Inviscid Flow
 

What kind of formulation is good to simulate the shock wave in shock tube with inviscid flow (I want to solve Euler's equations)?? Like the implicit one or the explicit one. I know Ansys recommend the AUSM flux type but which spatial Discretization scheme for Gradient and flow I have to use. With those which transient formulation I have to use? and one more thing How those thing affects the convergence of the solution.

Thank You.

Regards,

Prem