Fix for solution errors near interfaces in two-fluid computations

B. Koren, E.H. Brummelen, van, P.W. Hemker, B. Leer, van, M.R. Lewis

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Abstract

A finite-volume method is considered for the computation of flows of two compressible, immiscible fluids at very different densities. A level-set technique is employed to distinguish between the two fluids. A simple ghost-fluid method is presented as a fix for the solution errors (‘pressure oscillations’) that may occur near two-fluid interfaces when applying a capturing method. Computations with it for compressible two-fluid flows with arbitrarily large density ratios yield perfectly sharp, pressure-oscillation-free interfaces. The masses of the separate fluids appear to be conserved up to first-order accuracy.
Original languageEnglish
Title of host publicationComputational Fluid Dynamics 2002 (Proceedings of the Second International Conference on Computational Fluid Dynamics, ICCFD, Sydney, Australia, July 15-19, 2002)
EditorsS. Armfield, P. Morgan, K, Srinivas
Place of PublicationBerlin
PublisherSpringer
Pages523-528
ISBN (Print)3-540-00739-3
Publication statusPublished - 2003

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