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This example shows how to set up a simulation of two-phase flow with surface tension. Rayleigh-Taylor instability occurs when a fluid is on top of a lighter one. Surface tension tends to stabilize the flow. Results compare well to those available from the literature [1].

[1] Parolini N. Computational fluid dynamics for naval engineering problems. Ph.D. Thesis No. 3138, EPFL, 2004.