Single block, 15 degree wedge
Mach 2.0 inviscid flow
Study #1 (wedge01). Example case.

freestream static 2.0 14.7 520. 0. 0.
inviscid  
downstream pressure extrapolate always zone 1

cycles 1
iterations per cycle 2000

cfl 0.5

RHS HLLE SECOND

GRADIENT LEAST_SQUARES

TVD factor 2

end