What are the Riemannian invariants of 1D, unsteady, isentropic,
compressible flow?
2.
What are the equations for the lines in the x,t-plane along
which they are constant?
3.
What defines a simple wave?
One of the Riemannian invariants is completely constant.
4.
What happens when the initial expansion wave in a shock tube
hits the end of the tube?
It reflects
5.
To solve the isentropic flow in the driver section of a shock
tube over longer time, you will normally have to combine the
Riemannian invariants with what?
Boundary conditions
6.
What happens to the thickness of an expansion wave over time?
