一类计算前传播的鲁棒数值格式

N. Therme
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引用次数: 0

摘要

在这项工作中,提出了一类有限体积格式来数值求解涉及传播锋的方程。它们属于汉密尔顿-雅可比方程。基于交错网格的有限体积格式,最初用于计算流体流动,适用于使用Hamilton-Jacobi理论框架的g方程。所设计的方案具有极大原理性质,在直角网格上具有一致性和单调性。然后得到了该格式在直角网格上的收敛性,数值实验证明了该格式在更一般网格上的收敛性。
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A class of robust numerical schemes to compute front propagation
In this work a class of finite volume schemes is proposed to numerically solve equations involving propagating fronts. They fall into the class of Hamilton-Jacobi equations. Finite volume schemes based on staggered grids, and initially developed to compute fluid flows, are adapted to the G-equation, using the Hamilton-Jacobi theoretical framework. The designed scheme has a maximum principle property and is consistent an monotonous on Cartesian grids. A convergence property is then obtained for the scheme on Cartesian grids and numerical experiments evidence the convergence of the scheme on more general meshes.
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