Analysis of Fluid-Solid Coupling Radial Heat Transfer Characteristics in a Normal Hexagonal Bundle Regenerator under Oscillating Flow

被引:2
|
作者
Wang, Yajuan [1 ,2 ]
Zhang, Jun'an [1 ]
Lu, Zhiwei [1 ]
Liu, Bo [1 ]
Dong, Hao [1 ]
机构
[1] Xian Technol Univ, Sch Mech & Elect Engn, Xian 710021, Peoples R China
[2] Shaanxi Energy Inst, Coll Coal & Chem Ind, Xianyang 712000, Peoples R China
关键词
regenerator; oscillatory flow; radial direction; heat transfer; fluid-solid coupling; analytical solution; PERFORMANCE;
D O I
10.3390/en16186411
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The main purpose of this paper is to analyze the heat transfer mechanism of a new type of regenerator with a low temperature difference and low current resistance under oscillatory flow at room temperature. Taking the single tube of the regenerator as the research object, the exact analytical solution of the radial heat transfer characteristics of the regenerator is obtained by studying its analytical model. The factors affecting the heat transfer characteristics are analyzed, and then the regenerator is optimized to improve the performance and efficiency of the regenerator system. In this study, we systematically analyzed the radial heat transfer characteristics of a regenerator under isochoric process conditions. A closed-system physical model of the incompressible isochoric process under oscillating flow was established. Then, the radial analytical solutions of pressure fluctuation, fluid velocity, fluid-solid temperature, and heat were derived in the complex number field. Furthermore, the fluid velocity, fluid-solid coupling wall temperature, heat, and equivalent heat transfer coefficient were assessed. Furthermore, the influences of frequency, inner diameter R1 of the regenerator, and different working medium and materials on the above parameters were discussed. It was found that the analysis and evaluation of fluid velocity, fluid-structure coupling wall temperature, heat, and equivalent heat transfer coefficient are helpful in understanding the dynamic characteristics of radial heat transfer in a regenerator system. Through the study of radial heat transfer under oscillating flow, it was found that the working medium, frequency, inner diameter of the regenerator, and material quality of the regenerator are helpful for the design optimization of the regenerator. Furthermore, our investigations established that the variation law of wall fluid-solid coupling temperature amplitude could be divided into three parts: the unidirectional flow part; the low-frequency part, where the temperature amplitude falls rapidly with increasing frequency; and the high-frequency part, where the temperature amplitude increases with the frequency. In addition, the variation of radial heat transfer of the fluid-solid coupling surface is similar to the changes in the temperature amplitude. We also discovered that the equivalent heat transfer coefficient of the fluid-solid surface is related to thermal conductivity of the material. Specifically, larger thermal conductivity values result in greater equivalent heat transfer coefficients. Based on the research into the radial heat transfer characteristics, the new regenerator has great application potential in the Stirling air conditioning system at room temperature.
引用
收藏
页数:27
相关论文
共 50 条
  • [21] Heat transfer model for high power density internal combustion engine based on fluid-solid coupling model
    Zhang Y.
    Liu Z.
    Zuo Q.
    Xiao B.
    Sun S.
    Fu J.
    Fu, Jiahong (fujh@zucc.edu.cn), 2018, Central South University of Technology (49): : 2330 - 2336
  • [22] Modeling the slag flow and heat transfer with the effect of fluid-solid slag layer interface viscosity in an entrained flow gasifier
    Zhang, Binbin
    Shen, Zhongjie
    Liang, Qinfeng
    Xu, Jianliang
    Liu, Haifeng
    APPLIED THERMAL ENGINEERING, 2017, 122 : 785 - 793
  • [23] Experimental study on fluid flow and heat transfer characteristics of falling film over tube bundle
    Yan, Wei-Mon
    Pan, Chun-Wei
    Yang, Tien-Fu
    Ghalambaz, Mohammad
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2019, 130 : 9 - 24
  • [24] Experimental study of liquid sodium flow and heat transfer characteristics along a hexagonal 7-rod bundle
    Hou, Yandong
    Wang, Liu
    Wang, Mingjun
    Zhang, Kui
    Zhang, Xisi
    Hu, Wenjun
    Wu, Yingwei
    Tian, Wenxi
    Qiu, Suizheng
    Su, G. H.
    APPLIED THERMAL ENGINEERING, 2019, 149 : 578 - 587
  • [25] Optimization of the heat transfer efficiency of a ground source heat pump heating system via FLUENT numerical simulation with fluid-solid coupling
    Wei, Wei
    AIP ADVANCES, 2025, 15 (01)
  • [26] Comparative study of thermally stratified heat storage tank using different heat transfer fluids based on fluid-solid coupling method
    Wang, Gang
    Pang, Shicheng
    Jiang, Tieliu
    Han, Wei
    Chen, Zeshao
    CASE STUDIES IN THERMAL ENGINEERING, 2021, 28
  • [27] Three-dimensional fluid-solid coupling heat transfer simulation based on the multireference frame for a side-blown aluminum annealing furnace
    Qiu, Lin
    Li, Yanli
    Feng, Yanhui
    Chen, Zegui
    Zhang, Xinxin
    ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS, 2019, 13 (01) : 1036 - 1048
  • [28] The Numerical Analysis of Fluid-Solid Heat Transfer on Coil Terminal Box Thermal Shield for ITER Feeder
    Liu, Sumei
    Song, Yuntao
    Lu, Kun
    Wang, Zhongwei
    MATERIALS RESEARCH AND APPLICATIONS, PTS 1-3, 2014, 875-877 : 1009 - +
  • [29] Numerical simulation of turbulent fluid flow and heat transfer characteristics of heated blocks in the channel with an oscillating cylinder
    Yang, Yue-Tzu
    Chen, Cheng-Hua
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2008, 51 (7-8) : 1603 - 1612
  • [30] High-Speed Visual Analysis of Fluid Flow and Heat Transfer in Oscillating Heat Pipes with Different Diameters
    Liu, Xiangdong
    Sun, Qing
    Zhang, Chengbin
    Wu, Liangyu
    APPLIED SCIENCES-BASEL, 2016, 6 (11):