A phase-field method for boiling heat transfer

JOURNAL OF COMPUTATIONAL PHYSICS

卷:435

Article

Wang, Zhicheng^1,2  Zheng, Xiaoning¹  Chryssostomidis, Chryssostomos³  Karniadakis, George Em¹ 

[1] Brown Univ, Providence, RI 02912 USA

[2] Dalian Univ Technol, Lab Ocean Energy Utilizat, Minist Educ, Dalian 116024, Peoples R China

[3] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

关键词: Boiling heat transfer;    Phase field method;    Velocity correction scheme;    Entropy viscosity method;   

DOI  :  10.1016/j.jcp.2021.110239

来源: Elsevier

【 摘 要 】

We present a phase field method for heat transfer in two-phase flow with boiling. The vapor/liquid interface evolution is modeled by the Cahn-Hilliard equation. The phase change rate is determined by accounting for the heat conduction balance on either vapor or liquid side of the interfacial area, depending on which side the temperature is assumed to be maintained at the saturation temperature during boiling. The velocity correction scheme proposed by Dong & Shen [27] is extended to solve the Navier-Stokes equations for a non solenoidal velocity field, and the entropy viscosity method is employed for stabilization. The phase change model is verified by two-dimensional simulations of a vapor bubble growing in super-heated liquid and in film boiling. In both cases, mesh independence of the results is systematically performed. Subsequently, the method is applied to predict the growth of three-dimensional vapor bubble in a rectangular microchannel with boiling flow, achieving good agreement with experimental measurements and available simulation results using the level-set method. The numerical experiments demonstrate that the required mesh resolution for the phase field method is comparable with that of volume of fluid (VoF) and level-set methods. (C) 2021 Elsevier Inc. All rights reserved.

【 授权许可】

Free