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Limiting Viscosity Approach for the Riemann Problem in Isentropic Gas Dynamics.

机译:等熵气体动力学中黎曼问题的极限粘性方法。

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We consider the Riemann problem for the equations of isentropic gas dynamics in Eulerian coordinates. We construct solutions of this problem as limits of solutions of a 'viscosity' regularized problem that is rigged so as to preserve the invariance of the original problem under dilatations of the independent variables. The solutions thus constructed may contain vacuum regions. Using the same approach, we also construct solutions of the Riemann problem in case the data contain a vacuum state. (eg)

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