An interface-resolved phase-change model based on velocity decomposition
文献类型：期刊论文
| 作者 | Lu, Min1,2 ; Yang, Zixuan1,2; He, Guowei1,2; He GW(何国威); Lu M(卢敏)
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| 刊名 | JOURNAL OF COMPUTATIONAL PHYSICS
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| 出版日期 | 2023-02-15 |
| 卷号 | 475页码:28 |
| ISSN号 | 0021-9991 |
| 关键词 | Phase-change model Velocity decomposition Multi-phase flow |
| 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. |
| WOS关键词 | DIRECT NUMERICAL-SIMULATION ; FRONT-TRACKING METHOD ; LEVEL SET APPROACH ; BOUNDARY-CONDITION ; VOLUME ; COMPUTATIONS ; FLOWS ; EQUATIONS ; SURFACE |
| 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 |
| 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,et al. 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,何国威,&卢敏.(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. |
入库方式： OAI收割
来源：力学研究所
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