Two dimensional Riemann-type problem and shock diffraction for the Chaplygin gas (Q2338286)

The authors study the 2D isentropic Euler system for a Chaplygin gas. The initial condition is of the Riemann type, and the boundary condition is the slip condition along the wedge boundary; the wedge is an infinite angle. The existence of a global smooth (in every domain bounded by shocks and sonic circles) solution is proved for sufficiently small wedges.