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The piecewise parabolic method (PPM) for gas-dynamical simulations. (English) Zbl 0531.76082
Summary: We present the piecewise parabolic method, a higher-order extension of Godunov’s method. There are several new features of this method which distinguish it from other higher-order Godunov-type methods. We use a higher-order spatial interpolation than previously used, which allows for a steeper representation of discontinuities, particularly contact discontinuities. We introduce a simpler and more robust algorithm for calculating the nonlinear wave interactions used to compute fluxes. Finally, we recognize the need for additional dissipation in any higher- order Godunov method of this type, and introduce it in such a way so as not to degrade the quality of the results.

76N15 Gas dynamics (general theory)
76M99 Basic methods in fluid mechanics
Full Text: DOI
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