其他摘要：In this paper we describe and evaluate a geometric mass-preserving redistancing procedure for the level set function on general structured grids. The proposed algorithm is adapted from a recent finite-element-based method and preserves the mass by means of a localized mass correction. A salient feature of the scheme is the absence of adjustable parameters. The algorithm is tested in two and three spa- tial dimensions and compared with a state-of-the-art PDE-based redistancing method using structured Cartesian grids. Through the use of quantitative error measures of interest in level set methods, we show that the overall performance of the proposed geometric procedure is better than state-of-the-art PDE- based reinitialization schemes. We also show that the algorithm is well–suited for the highly–streched curvilinear grids used in CFD simulations.
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