An interface-resolved phase-change model based on velocity decomposition

doi:10.1016/j.jcp.2022.111827

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	An interface-resolved phase-change model based on velocity decomposition
	Lu, Min 1,2; Yang, Zixuan 1,2; He, Guowei 1,2
刊名	JOURNAL OF COMPUTATIONAL PHYSICS
	2023-02-15
卷号	475 页码:28
关键词	Phase-change model Velocity decomposition Multi-phase flow
ISSN号	0021-9991
DOI	10.1016/j.jcp.2022.111827
通讯作者	Yang, Zixuan(yangzx@imech.ac.cn)
英文摘要	An interface-resolved phase-change model is proposed in the interface-capturing framework based on the coupled level-set and volume of fluid (CLSVOF) method. A velocity decomposition method is employed to ensure the numerical stability and accuracy of interface propagation. Specifically, the velocity u is decomposed into the potential part u tilde associated with the phase change and the remaining rotational part u over line . The potential velocity u tilde is computed by solving a Poisson equation. A modified momentum equation is derived to solve the rotational-part velocity u over line , which is divergence-free. The momentum equation is solved using the Computational Air-Sea Tank (CAS-Tank) developed previously by Yang et al. [1]. To evolve the interface and ensure the mass conservation, a continuous interfacial velocity ur is constructed by adding the velocity u circumflex accent associated with the volume change of liquid (or gas) to u over line , where u circumflex accent is computed by solving a Poisson equation with constant coefficient. The proposed method is verified in the context of the two-dimensional (2D) droplet with constant evaporation rate, one-dimensional (1D) Stefan and sucking problems, 2D droplet evaporation at saturation temperature, 2D droplet evaporation below saturation temperature, and a three-dimensional (3D) evaporating droplet falling under the gravity. The results show that the proposed method is accurate and stable. The numerical method is also validated by simulating an evaporating droplet falling under the gravity and the numerical results are found to be in agreement with the results in the literature. The interaction of two evaporating droplets is also simulated in a 3D domain to show the capability of the proposed method in solving 3D problems.(c) 2022 Elsevier Inc. All rights reserved.
资助项目	National Natural Science Foundation of China (NSFC) Basic Science Center Program for 'Multiscale Problems in Nonlinear Mechanics'[11988102] ; NSFC project[11972038] ; Strategic Priority Research Program[XDB22040104]
WOS关键词	DIRECT NUMERICAL-SIMULATION ; FRONT-TRACKING METHOD ; LEVEL SET APPROACH ; BOUNDARY-CONDITION ; VOLUME ; COMPUTATIONS ; FLOWS ; EQUATIONS ; SURFACE
WOS研究方向	Computer Science ; Physics
语种	英语
WOS记录号	WOS:000911598900001
资助机构	National Natural Science Foundation of China (NSFC) Basic Science Center Program for 'Multiscale Problems in Nonlinear Mechanics' ; NSFC project ; Strategic Priority Research Program
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/91473]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Yang, Zixuan
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Lu, Min,Yang, Zixuan,He, Guowei. An interface-resolved phase-change model based on velocity decomposition[J]. JOURNAL OF COMPUTATIONAL PHYSICS,2023,475:28.
APA	Lu, Min,Yang, Zixuan,&He, Guowei.(2023).An interface-resolved phase-change model based on velocity decomposition.JOURNAL OF COMPUTATIONAL PHYSICS,475,28.
MLA	Lu, Min,et al."An interface-resolved phase-change model based on velocity decomposition".JOURNAL OF COMPUTATIONAL PHYSICS 475(2023):28.