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  • 學位論文

隱式最近點方法求解在變動曲面上的對流擴散方程

An implicit closest point method for solving convection-diffusion equations on a moving surface

指導教授 : 賴明治

摘要


本文提出一個數值計算方法去求解變動曲面上的對流擴散方程。利用水平集函數捕捉變動曲面。根據最近點方法,利用最近點將對流擴散方程延拓到曲面附近的小區域,並且在這小區域上用Crank-Nichoson方法求解嵌入方程。

並列摘要


We propose a numerical method to solving convection-diffusion equation on a moving surface. We use the level set function to capture the deforming surface. Based on the closest point method, we extend the convection-diffusion equation into a small neighborhood of the surface by closest point, and use Crank-Nicolson scheme to solving the embedding PDE on the neighborhood of the surface.

參考文獻


[1] Steven J. Ruuth, Barry Merriman, A simple embedding method for solving partial differential equations on surfaces, Journal of Computational Physics 227(3)(2008) p.1943-1961.
[2] Guang-Shan Jiang, Danping Peng, Weighted ENO schemes for Hamilton-Jacobi equations,SIAM Journal on Scientific Computing 21(6) p.2126-2143.
[3] Chohong Min, On reinitializing level set functions, Journal of Computational Physics 229(8)(2010) p.2764-2772.
[5] G. Dziuk, C. M. Elliott, Finite elements on evolving surfaces, IMA Journal of Numerical Analysis 27(2)(2007) p.262-292.
[6] Stanley Osher, Ronald Fedkiw, Level set methods and dynamic implicit surfaces, Spring(2003).

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