Abstract
In [6], the Ghost Fluid Method (GFM) was developed to capture the boundary conditions at a contact discontinuity in the inviscid compressible Euler equations. In [11], related techniques were used to develop a boundary condition capturing approach for the variable coefficient Poisson equation on domains with an embedded interface. In this paper, these new numerical techniques are extended to treat multiphase incompressible flow including the effects of viscosity, surface tension and gravity. While the most notable finite difference techniques for multiphase incompressible flow involve numerical smearing of the equations near the interface, see, e.g., [19, 17, 1], this new approach treats the interface in a sharp fashion.
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Kang, M., Fedkiw, R.P. & Liu, XD. A Boundary Condition Capturing Method for Multiphase Incompressible Flow. Journal of Scientific Computing 15, 323–360 (2000). https://doi.org/10.1023/A:1011178417620
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DOI: https://doi.org/10.1023/A:1011178417620