Thickness-based adaptive mesh refinement methods for multi-phase flow simulations with thin regions

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	Thickness-based adaptive mesh refinement methods for multi-phase flow simulations with thin regions
	Chen XD(陈晓东); Yang V; Yang, V
发表期刊	Journal of Computational Physics
	2014-03
卷号	269 页码:22-39
ISSN	0021-9991
摘要	In numerical simulations of multi-scale, multi-phase flows, grid refinement is required to resolve regions with small scales. A notable example is liquid-jet atomization and subsequent droplet dynamics. It is essential to characterize the detailed flow physics with variable length scales with high fidelity, in order to elucidate the underlying mechanisms. In this paper, two thickness-based mesh refinement schemes are developed based on distance- and topology-oriented criteria for thin regions with confining wall/plane of symmetry and in any situation, respectively. Both techniques are implemented in a general framework with a volume-of-fluid formulation and an adaptive-mesh-refinement capability. The distance-oriented technique compares against a critical value, the ratio of an interfacial cell size to the distance between the mass center of the cell and a reference plane. The topology-oriented technique is developed from digital topology theories to handle more general conditions. The requirement for interfacial mesh refinement can be detected swiftly, without the need of thickness information, equation solving, variable averaging or mesh repairing. The mesh refinement level increases smoothly on demand in thin regions. The schemes have been verified and validated against several benchmark cases to demonstrate their effectiveness and robustness. These include the dynamics of colliding droplets, droplet motions in a microchannel, and atomization of liquid impinging jets. Overall, the thickness-based refinement technique provides highly adaptive meshes for problems with thin regions in an efficient and fully automatic manner. (C) 2014 Elsevier Inc. All rights reserved.
关键词	Thickness-based Refinement Adaptive Mesh Refinement Digital Topology Volume-of-fluid Multi-phase Simulation
学科领域	流体力学 ; 计算流体力学
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000335439300002
项目资助者	This work was financially supported by the Army Research Office under the Multi-University Research Initiative under Contract No. W911NF-08-1-0124. The support and encouragement provided by Dr. Ralph Anthenien are gratefully acknowledged. Special thanks is due to Dr. Stephane Popinet for allowing us to use his work on the VOF and AMR algorithms in the Gerris code.
论文分区	一类
引用统计	被引频次：58[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/48830
专题	非线性力学国家重点实验室
通讯作者	Yang, V
推荐引用方式 GB/T 7714	Chen XD,Yang V,Yang, V. Thickness-based adaptive mesh refinement methods for multi-phase flow simulations with thin regions[J]. Journal of Computational Physics,2014,269:22-39.
APA	Chen XD,Yang V,&Yang, V.(2014).Thickness-based adaptive mesh refinement methods for multi-phase flow simulations with thin regions.Journal of Computational Physics,269,22-39.
MLA	Chen XD,et al."Thickness-based adaptive mesh refinement methods for multi-phase flow simulations with thin regions".Journal of Computational Physics 269(2014):22-39.

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