侧壁面正弦加热条件下电场强化固液相变研究

doi:10.19799/j.cnki.2095-4239.2021.0473

储能科学与技术 ›› 2022, Vol. 11 ›› Issue (5): 1446-1454.doi: 10.19799/j.cnki.2095-4239.2021.0473

侧壁面正弦加热条件下电场强化固液相变研究

郝金鹏¹(), 杜迎春², 伍弘¹, 和琨³, 汪垒³()

^1.国网宁夏电力有限公司电力科学研究院，宁夏银川 750001
^2.国网宁夏电力有限公司吴忠供电公司，宁夏吴忠 751100
^3.中国地质大学（武汉）数学与物理学院，湖北武汉 430074

收稿日期:2021-09-09 修回日期:2021-10-19 出版日期:2022-05-05 发布日期:2022-05-07
通讯作者: 汪垒 E-mail:416444715@qq.com;leiwang@cug.edu.cn
作者简介: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；
基金资助:
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)

Numerical investigation of electrohydrodynamic solid-liquid phase change in square enclosure with sinusoidal temperature distribution

Jinpeng HAO¹(), Yingchun DU², Hong WU¹, Kun HE³, Lei WANG³()

^1.Power Research Institute of State Grid Ningxia Electric Power Co. , Ltd. , Yinchuan 750001, Ningxia, China
^2.State Grid Ningxia Electric Power Co. , Ltd. , Wuzhong 751100, Ningxia, China
^3.School of Mathematics and Physics, China University of Geosciences, Wuhan 430074, Hubei, China

Received:2021-09-09 Revised:2021-10-19 Online:2022-05-05 Published:2022-05-07
Contact: Lei WANG E-mail:416444715@qq.com;leiwang@cug.edu.cn

摘要/Abstract

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。

关键词: 潜热储热, 电流体动力学, 正弦加热

Abstract:

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.

Key words: latent heat thermal energy storage, electrohydrodynamic, sinusoidal temperature distribution

中图分类号:

TK 02

郝金鹏, 杜迎春, 伍弘, 和琨, 汪垒. 侧壁面正弦加热条件下电场强化固液相变研究[J]. 储能科学与技术, 2022, 11(5): 1446-1454.

Jinpeng HAO, Yingchun DU, Hong WU, Kun HE, Lei WANG. Numerical investigation of electrohydrodynamic solid-liquid phase change in square enclosure with sinusoidal temperature distribution[J]. Energy Storage Science and Technology, 2022, 11(5): 1446-1454.

图/表 10

图1

表1

侧壁均匀加热时，电场作用下相变材料熔化时间减少的百分比"

项目	数值
电瑞利数 $T$	500	1000	1500	2000
文献结果^[5]	32.84%	47.97%	58.22%	62.98%
当前结果	37.59%	53.40%	60.79%	66.68%
相对误差	12.64%	10.17%	4.23%	5.55%

表1

图2

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图5

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参考文献 11

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侧壁面正弦加热条件下电场强化固液相变研究

Numerical investigation of electrohydrodynamic solid-liquid phase change in square enclosure with sinusoidal temperature distribution

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