| An interface-resolved phase-change model based on velocity decomposition | |
Lu M(卢敏) ; Yang ZX(杨子轩); He GW(何国威)
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| Corresponding Author | Yang, Zixuan([email protected]) |
| Source Publication | JOURNAL OF COMPUTATIONAL PHYSICS
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| 2023-02-15 | |
| Volume | 475Pages:28 |
| ISSN | 0021-9991 |
| Abstract | 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. |
| Keyword | Phase-change model Velocity decomposition Multi-phase flow |
| DOI | 10.1016/j.jcp.2022.111827 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000911598900001 |
| WOS Keyword | DIRECT NUMERICAL-SIMULATION ; FRONT-TRACKING METHOD ; LEVEL SET APPROACH ; BOUNDARY-CONDITION ; VOLUME ; COMPUTATIONS ; FLOWS ; EQUATIONS ; SURFACE |
| WOS Research Area | Computer Science ; Physics |
| WOS Subject | Computer Science, Interdisciplinary Applications ; Physics, Mathematical |
| Funding Project | 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] |
| Funding Organization | National Natural Science Foundation of China (NSFC) Basic Science Center Program for 'Multiscale Problems in Nonlinear Mechanics' ; NSFC project ; Strategic Priority Research Program |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Yang, Zixuan |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/91474 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Lu M,Yang ZX,He GW. An interface-resolved phase-change model based on velocity decomposition[J]. JOURNAL OF COMPUTATIONAL PHYSICS,2023,475:28.Rp_Au:Yang, Zixuan |
| APA | 卢敏,杨子轩,&何国威.(2023).An interface-resolved phase-change model based on velocity decomposition.JOURNAL OF COMPUTATIONAL PHYSICS,475,28. |
| MLA | 卢敏,et al."An interface-resolved phase-change model based on velocity decomposition".JOURNAL OF COMPUTATIONAL PHYSICS 475(2023):28. |
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| Jp2023Fa162.pdf（3953KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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