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多孔介质中混溶驱动问题的时空局部网格加密有限差分格式 被引量:2

A Finite Difference Scheme for Miscible Displacement Flow in Porous Media on Grids with Local Refinement in Time and Space
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摘要 给出了多孔介质中一维混溶驱动问题在时间和空间上进行局部网格加密的有限差分格式,压力方程采用中心差分格式近似,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,并利用极大值原理给出了误差估计。最后给出了数值算例。 A finite difference scheme for one-dimensional miscible displacement problems on grids with local refinement in time and space is constructed and stndied. The pressure equation is approximated by a central difference scheme. The saturation equation is discretized by a modified upwind scheme. Linear interpolation is ntilized at the slave nodes. Error analysis is presented and is illustrated by a numerical example.
作者 刘伟
出处 《工程数学学报》 CSCD 北大核心 2006年第1期139-146,共8页 Chinese Journal of Engineering Mathematics
基金 国家重点基础研究专项经费(G1999032803) 国家自然科学基金(10372052 10271066) 教育部博士点基金(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8

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二级参考文献5

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