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多孔介质中二维混溶驱动问题在时空局部加密复合网格上的有限差分格式

A finite difference scheme for two-dimensional miscible displacement flow in porous media on grids with local refinement in time and space
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摘要 对多孔介质中不可压缩流体的混溶驱动问题,建立了其二维问题在时间和空间上进行局部加密的复合网格上的有限差分格式,压力方程采用5点差分格式近似,饱和度方程采用修正迎风格式,且在交界面上采用线性插值,并给出了误差估计.最后给出了数值算例. A finite difference scheme for two-dimensional miscible displacement flow in porous media on grids with local refinement in time and space is constructed. The pressure equation is approximated'by a five-point difference scheme. The saturation equation is discretized by a modified upwind scheme. Linear interpolation is utilized at the slave nodes. Error analysis is presented. Finally, a numerical example is given.
作者 刘伟
出处 《山东大学学报(理学版)》 CAS CSCD 北大核心 2005年第5期37-44,共8页 Journal of Shandong University(Natural Science)
基金 国家重点基础研究专项经费资助(G1999032803) 国家自然科学基金资助项目(10372052 10271066) 教育部博士点基金资助项目(20030422047)
关键词 耦合方程组 局部网格加密 混溶驱动 误差估计 coupled equations local grid refinement immiscible displacement error estimate
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参考文献6

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