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A semi-implicit level set method for multiphase flows and fluid-structure interaction problems
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DOI：10.1016/j.jcp.2016.03.004.png)
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Abstract
En 中文
In this paper we present a novel semi-implicit time-discretization of the level set method introduced in [8] for fluid-structure interaction problems. The idea stems from a linear stability analysis derived on a simplified one-dimensional problem. The semi-implicit scheme relies on a simple filter operating as a pre-processing on the level set function. It applies to multiphase flows driven by surface tension as well as to fluid-structure interaction problems. The semi-implicit scheme avoids the stability constraints that explicit scheme need to satisfy and reduces significantly the computational cost. It is validated through comparisons with the original explicit scheme and refinement studies on two-dimensional benchmarks. (C) 2016 Elsevier Inc. All rights reserved.
Keywords:
Level set methods
Implicit schemes
Fluid-structure interaction
Multiphase flows
Surface tension
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