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二维非线性抛物方程广义差分法/有限体积法的自适应计算 被引量:6

Adaptive Generalized Difference/Finite Volume Computations for Two Dimensional Nonlinear Parabolic Equation
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摘要  给出三角网上二维非线性抛物方程广义差分法(有限体积法)的一种基于残量估计的后验误差估计,并在此基础上设计了自适应计算方案,以适应物理解在时空的大梯度变化.提出了适合发展方程自适应计算的三角网数据结构(不是树状结构)和灵活的局部粗化算法. A posteriori error estimates of residual type for generalized difference method (finite volume method) are derived for 2D nonlinear parabolic equation on triangular meshes and an adaptive scheme suitable to problems with sharp moving fronts is designed.A data structure (not a tree structure) and a flexible local coarsening method for triangular meshes suitable to adaptive computations for evolution problems are also presented.
机构地区 吉林大学数学院
出处 《计算物理》 CSCD 北大核心 2003年第4期298-306,共9页 Chinese Journal of Computational Physics
基金 北京应用物理与计算数学研究所计算物理实验室基金资助项目
关键词 二维非线性抛物方程 广义差分法 有限体积法 自适应计算 三角网粗化算法 后验误差估计 nonlinear parabolic equation generalized difference method finite volume method adaptive computation coarsening method for triangular meshes
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参考文献6

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