Godunov's scheme is used to study the physics of time-dependent, axisymmetric, high pressure and high speed gas ejection. The flowfield contains such discontinuities as blast wave, contact discontinuity, Mach Disc and intercepting shock. If a baffle is installed and deflects the flow direction, thrust is generated as the momentum of the gas changes.
The flow is assumed inviscid and the time dependent Euler equation is used as the governing equation. Also assumed is a constant projectile speed in the computational domain.
From the result of the test calculation for the piston problem, shock tube and two dimensional jet ejection, Godunov's scheme is demonstrated to be very efficient and powerful in capturing discontinuities. The computational result of the title problem is compared with the experiment made by Gion and Schmidt. For the infinite baffle the comparisons of pressure distribution and time history of pressure on the baffle turned out reasonable.
