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arXiv 2405.06352math.NAcs.NA
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多孔介质中可压缩混溶驱替问题非协调虚拟元法的收敛性分析

Convergence analysis of a nonconforming virtual element method for compressible miscible displacement problems in porous media

Sarvesh Kumar, Devika Shylaja

AI总结:

针对多孔介质中的可压缩混溶驱替问题,提出结合协调与非协调VEM及向后欧拉格式的离散方法,并证明速度、压力和浓度的误差估计。

摘要:

本文给出了多孔介质中一种可压缩流体被另一种可压缩流体混溶驱替的先验误差估计。研究采用 $H(\ m div)$ 协调虚拟元法(VEM)逼近速度,同时采用非协调虚拟元方法处理浓度。压力则使用标准的分段间断多项式函数进行离散。这些空间离散技术与用于时间离散的向后欧拉差分格式相结合。文中建立了速度、压力和浓度的误差估计,并给出了验证理论估计的数值结果。

英文摘要:

This article presents a priori error estimates of the miscible displacement of one compressible fluid by another in a porous medium. The study utilizes the $H(\rm div)$ conforming virtual element method (VEM) for the approximation of the velocity, while a non-conforming virtual element approach is employed for the concentration. The pressure is discretised using the standard piecewise discontinuous polynomial functions. These spatial discretization techniques are combined with a backward Euler difference scheme for time discretization. Error estimates are established for velocity, pressure and concentration. The article also includes numerical results that validate the theoretical estimates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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