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可压缩核废料污染问题的变网格特征有限元法 被引量:2

Characteristic finite element methods with moving mesh of contamination by compressible nuclear waste in porous media
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摘要 对多孔介质中可压缩核废料污染问题提出并分析了一类特征线修正的变网格混合元方法 ,即对流动方程采用混合元方法 ,对浓度方程和传热方程采用变网格特征有限元法 .从而在不增加计算量的基础上可采用对时间t的大步长计算 ,充分地发挥了有限元数值解法的高精度优越性 ,并在相当一般的情况下得到了L2 模误差估计 . A characteristic finite element methods with moving mesh is presented and analyzed for the simulation of contamination by compressible nuclear waste in porous media. We employ the mixed methods to approximate the fluid equation and characteristic finite element methods with moving mesh to approximate the concentration and temperature equation. So we can bring the advantage of the finite element method into full play .we also obtain the error estimates in L 2 norm.
作者 孙军红
出处 《山东大学学报(理学版)》 CAS CSCD 北大核心 2003年第4期7-12,共6页 Journal of Shandong University(Natural Science)
基金 国家重点基础研究专项经费 (G19990 3 2 8) 国家自然科学基金项目 ( 198710 5 1 19972 0 3 9)
关键词 核废料污染 变网格特征 有限元法 L^2模误差估计 多孔介质 contamination by nuclear waste moving mesh FEM with characteristic L 2 error estimates
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参考文献7

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