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Interactions of delta shock waves for a class of nonstrictly hyperbolic system of conservation laws
Yanyan Zhang
Keywords:Nonstrictly hyperbolic system; Wave interaction; Delta shock waves; Delta contact discontinuity; Split delta function.
Abstract:
      In this paper, we study the perturbed Riemann problem for a class of nonstrictly hyperbolic system of conservation laws, and focuse on the interactions of delta shock waves with the shock waves and the rarefaction waves. The global solutions are constructed completely with the method of splitting delta function. In solutions, we find a new kind of nonclassical wave, which is called delta contact discontinuity with Dirac delta function in both components. It is quite different from the previous ones on which only one state variable contains the Dirac delta function. Moreover, by letting perturbed parameter ε tend to zero, we analyze the stability of Riemann solutions.