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J. J. Monaghan and Ashkan Rafiee A simple SPH algorithm for multi-fluid flow with high density ratios International Journal for Numerical Methods in Fluids 71

Version of Record online: 29 MAR 2012 | DOI: 10.1002/fld.3671

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In this paper, we show that problems involving two fluids, with density ratios up to at least 1000, can be simulated by means of a simple modification to standard SPH equations. The simulations treat liquids as slightly compressible with a Mach number of 0.1. Convergence is established for a wide variety of problems including themotion of an ellipsoid composed of two fluids, the Rayleigh-Taylor instability, interface waves, and gravity currents.

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