中国物理B ›› 2022, Vol. 31 ›› Issue (3): 34301-034301.doi: 10.1088/1674-1056/ac1f02

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Synthetical optimization of the structure dimension for the thermoacoustic regenerator

Huifang Kang(康慧芳)1,†, Lingxiao Zhang(张凌霄)1, Jun Shen(沈俊)2, Xiachen Ding(丁夏琛)1, Zhenxing Li(李振兴)2, and Jun Liu(刘俊)1   

  1. 1 Beijing Institute of Technology, Beijing 100124, China;
    2 Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2021-05-06 修回日期:2021-07-14 接受日期:2021-08-19 出版日期:2022-02-22 发布日期:2022-02-17
  • 通讯作者: Huifang Kang E-mail:kanghf@bit.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 51925605).

Synthetical optimization of the structure dimension for the thermoacoustic regenerator

Huifang Kang(康慧芳)1,†, Lingxiao Zhang(张凌霄)1, Jun Shen(沈俊)2, Xiachen Ding(丁夏琛)1, Zhenxing Li(李振兴)2, and Jun Liu(刘俊)1   

  1. 1 Beijing Institute of Technology, Beijing 100124, China;
    2 Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2021-05-06 Revised:2021-07-14 Accepted:2021-08-19 Online:2022-02-22 Published:2022-02-17
  • Contact: Huifang Kang E-mail:kanghf@bit.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 51925605).

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摘要： The quantitative investigation of parameters in the renegerator is essential for the optimization of thermoacoustic devices, while the majority of the previous research only considered parameters of the working field, working gas and the hydraulic radius. Based on the linear thermoacoustic theory, this paper extracts a normalized parameter for low-amplitude conditions, which is called the regenerator operation factor. By extracting the regenerator operation factor and relative hydraulic radius, the influence of frequency on the efficiency can be controlled and offset. It can be found that thermoacoustic devices with different frequencies can perform the same efficiency by adjusting the radius in proportion to the axial length. Finally, this paper synthetically optimizes the dimension of the thermoacoustic regenerator by taking the regenerator operation factor, relative hydraulic radius and acoustic field parameter as variables. Conclusions in this paper are of great significance for explaining the best working conditions of engines and directing the miniaturization and optimal design of thermoacoustic devices.

关键词: thermoacoustic, regenerator, hydraulic radius, regenerator length

Abstract: The quantitative investigation of parameters in the renegerator is essential for the optimization of thermoacoustic devices, while the majority of the previous research only considered parameters of the working field, working gas and the hydraulic radius. Based on the linear thermoacoustic theory, this paper extracts a normalized parameter for low-amplitude conditions, which is called the regenerator operation factor. By extracting the regenerator operation factor and relative hydraulic radius, the influence of frequency on the efficiency can be controlled and offset. It can be found that thermoacoustic devices with different frequencies can perform the same efficiency by adjusting the radius in proportion to the axial length. Finally, this paper synthetically optimizes the dimension of the thermoacoustic regenerator by taking the regenerator operation factor, relative hydraulic radius and acoustic field parameter as variables. Conclusions in this paper are of great significance for explaining the best working conditions of engines and directing the miniaturization and optimal design of thermoacoustic devices.

Key words: thermoacoustic, regenerator, hydraulic radius, regenerator length

中图分类号:  (General linear acoustics)

  • 43.20.+g
43.35.Ud (Thermoacoustics, high temperature acoustics, photoacoustic effect) 44.30.+v (Heat flow in porous media)