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arXiv · 2002.09381

A solver for stiff finite-rate relaxation in Baer-Nunziato two-phase flow models

Simone Chiocchetti·Christoph Müller
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Abstract

In this paper we present a technique for constructing robust solvers for stiff algebraic source terms, such as those typically used for modelling relaxation processes in hyperbolic systems of partial differential equations describing two-phase flows, namely models of the Baer-Nunziato family. The method is based on an exponential integrator which employs an approximate linearised source term operator that is constructed in such a way that one can compute solutions to the linearised equations avoiding any delicate matrix inversion operations.

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Simone Chiocchetti, Christoph Müller. 2020-02-21. A solver for stiff finite-rate relaxation in Baer-Nunziato two-phase flow models. https://doi.org/10.1007/978-3-030-33338-6

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