Interfacial micro-currents in continuum-scale multi-component lattice Boltzmann equation hydrodynamics
Interfacial micro-currents in continuum-scale multi-component lattice Boltzmann equation hydrodynamics
复制标题
连续尺度多组分晶格玻尔兹曼方程流体动力学中的界面微电流
DOI：
10.1016/j.cpc.2017.06.005
复制
发表时间：
2017
影响因子：
6.3
通讯作者：
Halliday I
中科院分区：
文献类型：
--
作者：
Halliday I
我们描述、分析和减少了Lishchuk等人在连续介质近似下描述不混溶流体的一类格子Boltzmann方程模拟方法中的微电流效应。(2003)。当考虑线性、低雷诺数区域时，该模型的微流场和相关的密度调整可以分解为独立的、可叠加的贡献，这些贡献来自于其浸没边界力中的各种误差项。旋转(螺线管)的误差力贡献主要负责微电流(相应的密度调整)。旋转各向异性误差项来自数值导数和界面支撑力的采样。可以通过消除因果误差力或否定因果误差力来消除它们。发现设计更有效的模板并显著提高性能是直接的。实际上，通过使用合适的模板，Lishchuk方法中产生的微电流活动减少了大约四分之三，当采样的影响被去除时，大约减少了一个数量级。
We describe, analyse and reduce micro-current effects in one class of lattice Boltzmann equation simulation method describing immiscible fluids within the continuum approximation, due to Lishchuk et al. (2003). This model’s micro-current flow field and associated density adjustment, when considered in the linear, low-Reynolds number regime, may be decomposed into independent, superposable contributions arising from various error terms in its immersed boundary force. Error force contributions which are rotational (solenoidal) are mainly responsible for the micro-current (corresponding density adjustment). Rotationally anisotropic error terms arise from numerical derivatives and from the sampling of the interface-supporting force. They may be removed, either by eliminating the causal error force or by negating it. It is found to be straightforward to design more effective stencils with significantly improved performance.Practically, the micro-current activity arising in Lishchuk’s method is reduced by approximately three quarters by using an appropriate stencil and approximately by an order of magnitude when the effects of sampling are removed.
流动中充满液体的囊泡的多分量格子玻尔兹曼方程。
DOI：
--
发表时间：
2013
期刊：
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子：
--
作者：
I. Halliday;S. Lishchuk;T. Spencer;G. Pontrelli;C. M. Care
通讯作者：
C. M. Care
流动钝化的格子玻尔兹曼模型
DOI：
--
发表时间：
2004
期刊：
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
影响因子：
--
作者：
M. M. Dupin;Ian Halliday;C. M. Care
通讯作者：
C. M. Care
影响因子：
2.4
作者：
Li, Q.;Luo, K. H.;Li, X. J.
通讯作者：
Li, X. J.