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research-article

The lattice Boltzmann investigation for the melting process of phase change material in an inclining cavity

[+] Author and Article Information
Zhonghao Rao

School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116 China
raozhonghao@cumt.edu.cn

Yutao Huo

School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116 China
407893554@qq.com

Yinmin Li

School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116 China
cumtliyimin@163.com

1Corresponding author.

ASME doi:10.1115/1.4037908 History: Received May 24, 2016; Revised August 30, 2017

Abstract

The solid-liquid phase change process is of significant importance in the widely usage of phase change material (PCM), including thermal energy storage. In this paper, a phase change lattice Boltzmann (LB) model has been used to investigate the effects of inclination angle on the melting process in a cavity filled with PCM, with three kinds of heat flux distribution applied to the left wall: uniform distribution, linear distribution and parabolic symmetry distribution. The results show that for all the heat flux distributions, the slight clockwise rotation of cavity is able to accelerate the melting process. Furthermore, when more heat is transferred into the cavity through the middle part (parabolic symmetry distribution) or bottom part (linear distribution), the clockwise rotation of cavity leads to higher temperature of PCM than anticlockwise rotation.

Copyright (c) 2017 by ASME
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