Corrugation instabilities of the Riemann problem in relativistic hydrodynamics

Details Corrugation instabilities of the Riemann problem in relativistic hydrodynamics Corrugation instabilities of the Riemann problem in relativistic hydrodynamics

2011-04-19

arxiv.org/abs/1104.3751v1

Physics

Mathematical Physics

11 pages, 16 figures

Scientific paper

Corrugation instabilities occurring for solutions of the Riemann problem in relativistic hydrodynamics in which the fluid moves with a non-zero velocity tangent to the initial discontinuity are studied numerically. We perform simulations both for ultrarelativistic and perfect gas equations of state. We focus on a set of problems with moderately relativistic velocities but exhausting all possible wave patterns of solutions. Perturbations are applied to the shape of the initial discontinuity. Instabilities that develop are only restricted to a region around a contact discontinuity. Both shock and rarefaction waves appear to be stable.

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