期刊文献+

非结构网格上解二维Hamilton-Jacobi方程的一种有限体积方法 被引量:1

A LEAST SQUARE METHOD FOR TWO-DIMENSIONS HAMILTON-JACOBI EQUATIONS ON UNSTRUCTURED MESHES
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摘要 本文利用最小二乘插值的思想,发展了一类在非结构网格上解Hamilton-Jacobi方程的方法.此方法通过确定超定线性方程组来得到所求单元上的二次插值多项式,并利用极值原理的思想,保证其数值解的导数不出现新的极值.典型算例表明此方法计算速度快,对间断有很好的分辨能力. This paper develops a method for Hamilton-Jacobi equations on unstructured meshes with the least square idea.Our method gets the secondary interpolation polynomial using transcendental equations and ensures that the derivative of the solution will not produce the new extremum using the maximum principle.Extensive numerical experiments show that the method compute fast and improve resolving power of the discontinuous domain.The scheme is effective.
出处 《数值计算与计算机应用》 CSCD 2006年第2期133-138,共6页 Journal on Numerical Methods and Computer Applications
基金 国家自然科学基金资助项目(批准号为:10571178)
关键词 HAMILTON-JACOBI方程 最小二乘 非结构网格 Hamilton-Jacobi equation, least square, unstructured meshes
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参考文献7

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  • 1王保国,刘淑艳,张雅,纪秀玲,靳艳梅.双时间步长加权ENO-强紧致高分辨率格式及在叶轮机械非定常流动中的应用[J].航空动力学报,2005,20(4):534-539. 被引量:9
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  • 8葛全文.用基于水平集方法的自适应运动网格方法解Hamilton-Jacobi方程[J].工程数学学报,2003,20(2):7-14. 被引量:1

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