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arXiv 1503.04471math.NAcs.NA
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用于电荷载体传输和电渗模型的能量稳定离散化方法

Energetically stable discretizations for charge carrier transport and electrokinetic models

The Pennsylvania State University(宾夕法尼亚州立大学)

Chun Liu, Maximilian Metti, Jinchao Xu

AI总结:

本文提出了一种基于线性方法的有限元离散化方法,用于近似求解泊松-能斯特-普朗克方程,通过保证解的正性并建立离散能量估计,验证了计算解的收敛性。

摘要:

本文提出了一种基于线性方法的有限元离散化方法,用于近似求解泊松-能斯特-普朗克(PNP)方程。该离散化方案强制计算解的正性,对应于粒子密度函数,并建立了类似于熟悉PNP系统的能量定律的离散能量估计。该能量估计被扩展到有限元解的电渗模型,该模型将PNP系统与纳维-斯托克斯方程耦合。进行了数值实验以验证计算解的收敛性并验证离散能量估计。

英文摘要:

A finite element discretization using a method of lines approached is proposed for approximately solving the Poisson-Nernst-Planck (PNP) equations. This discretization scheme enforces positivity of the computed solutions, corresponding to particle density functions, and a discrete energy estimate is established that resembles the familiar energy law for the PNP system. This energy estimate is extended to finite element solutions to an electrokinetic model, which couples the PNP system with the Navier-Stokes equations. Numerical experiments are conducted to validate convergence of the computed solution and verify the discrete energy estimate.

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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