摘要
本文采用格子Boltzmann方法对侧壁面正弦加热条件下的方腔潜热储热单元的蓄热过程进行模拟与分析,系统研究了电场对相变材料相变过程的强化效果以及加热壁面温度分布变化的振幅、角频率、初相对电场强化效果的影响。结果表明,与没有电场相比,施加电场以后,潜热储热单元的蓄热速率显著提升,且电场越强,蓄热速率提升越明显。此外,加热壁面温度分布变化的角频率为1.5时,系统的蓄热最高,蓄热时间最短,而加热壁面温度分布的振幅和初相的影响规律与电场强度的大小有很大关系。
The charging process of a latent heat thermal energy storage unit inside a square cavity with a sinusoidal temperature distribution is numerically investigated in this paper by using the lattice Boltzmann method.The effect of the electric field,amplitude,wave number,and phase deviation of the temperature distribution on the melting performance is studied.Based on the numerical results,it is shown that,compared with the case without an electric field,the melting efficiency of the latent heat thermal energy storage is significantly improved,and this phenomenon becomes more pronounced with a stronger electric field.In addition,when the wave number of the temperature distribution is 1.5,the total melting time of the system is the lowest,whereas the influence of amplitude and phase deviation on the melting performance largely depends on the electric Rayleigh number.
作者
郝金鹏
杜迎春
伍弘
和琨
汪垒
HAO Jinpeng;DU Yingchun;WU Hong;HE Kun;WANG Lei(Power Research Institute of State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan 750001,Ningxia,China;State Grid Ningxia Electric Power Co.,Ltd.,Wuzhong 751100,Ningxia,China;School of Mathematics and Physics,China University of Geosciences,Wuhan 430074,Hubei,China)
出处
《储能科学与技术》
CAS
CSCD
北大核心
2022年第5期1446-1454,共9页
Energy Storage Science and Technology
基金
宁夏自治区自然科学基金项目(2020AAC03488)
国家自然科学基金项目(12002320)。
关键词
潜热储热
电流体动力学
正弦加热
latent heat thermal energy storage
electrohydrodynamic
sinusoidal temperature distribution
作者简介
第一作者:郝金鹏(1985-),男,硕士,高级工程师,从事电气设备绝缘技术方面的研究工作,E-mail:416444715@qq.com;通讯作者:汪垒,副教授,主要从事介观流体模拟研究,E-mail:leiwang@cug.edu.cn。
