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arXiv 1908.03681math.NAcs.NA
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变密度运动接触线拟不可压相场模型的能量稳定$C^0$有限元格式

An energy stable $C^0$ finite element scheme for a quasi-incompressible phase-field model of moving contact line with variable density

Lingyue Shen, Huaxiong Huang, Ping Lin, Zilong Song, Shixin Xu

摘要:

本文主要研究了具有移动接触线的变密度两相流的建模与仿真。基于准不可压缩性概念和能量变分方法,建立了一个具有广义Navier边界条件的自洽相场模型。在此基础上,提出了一种质量守恒、能量稳定的C0有限元格式。各种数值模拟结果表明,所提出的格式质量守恒,能量稳定,在L2范数意义下P1元和P2元的收敛速度分别为2阶和3阶。

英文摘要:

In this paper, we focus on modeling and simulation of two-phase flow with moving contact lines and variable density. A thermodynamically consistent phase-field model with General Navier Boundary Condition is developed based on the concept of quasi-incompressibility and the energy variational method. Then a mass conserving and energy stable C0 finite element scheme is developed to solve the PDE system. Various numerical simulation results show that the proposed schemes are mass conservative, energy stable and the 2nd order for P1 element and 3rd order for P2 element convergence rate in the sense of L2 norm.

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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