Numerical and Experimental Study on Heat Transfer Characteristics of Single Vibrating Blade in a Channel Flow

  • HU Jinqi ,
  • MIN Chunhua ,
  • YANG Xuguang ,
  • WANG Kun ,
  • XIE Liyao
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  • 1. School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
    2. Hebei Key Laboratory of Thermal Science and Energy Clean Utilization, Hebei University of Technology, Tianjin 300401, China

网络出版日期: 2023-11-22

基金资助

This research was supported by the National Natural Science Foundation of China (No. 52276059), the Key Training Fund for “Project & Team” of Tianjin in China (No. XC202042), and the Natural Science Foundation of Tianjin in China (20JCZDJC00470).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023

Numerical and Experimental Study on Heat Transfer Characteristics of Single Vibrating Blade in a Channel Flow

  • HU Jinqi ,
  • MIN Chunhua ,
  • YANG Xuguang ,
  • WANG Kun ,
  • XIE Liyao
Expand
  • 1. School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
    2. Hebei Key Laboratory of Thermal Science and Energy Clean Utilization, Hebei University of Technology, Tianjin 300401, China

Online published: 2023-11-22

Supported by

This research was supported by the National Natural Science Foundation of China (No. 52276059), the Key Training Fund for “Project & Team” of Tianjin in China (No. XC202042), and the Natural Science Foundation of Tianjin in China (20JCZDJC00470).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023

摘要

本工作中对不同形状振动叶片的换热特性进行了数值模拟。单个叶片被垂直或水平布置在一个通道中。静态环境和通道流动都被考虑在内。四种类型的叶片,即矩形、梯形、锯齿形和折扇形,被比较地建模。结果表明,振动叶片可以有效地提高受热面的对流换热,而压降增加较少。对于静态环境,叶片垂直布置的换热性能优于水平布置;对于通道流,得到了相反的结论。对于入口速度=2 m/s和入口速度=6 m/s,局部对流换热系数的最大改善分别约为98%和12%,相应的压降分别减少和增加了9.5%和8.8%。振动叶片可以有效改善较低进口速度下的对流传热。在相同的工作条件下,四种形状的风扇叶片之间的压降差异小于1%,折扇形叶片的局部散热性能最好。

本文引用格式

HU Jinqi , MIN Chunhua , YANG Xuguang , WANG Kun , XIE Liyao . Numerical and Experimental Study on Heat Transfer Characteristics of Single Vibrating Blade in a Channel Flow[J]. 热科学学报, 2023 , 32(3) : 982 -992 . DOI: 10.1007/s11630-023-1814-y

Abstract

Abstract: The heat transfer characteristics of the vibrating blades of different shapes were numerically modeled in the present work. A single blade was arranged in a channel with vertical or horizontal alignment. Both the static environment and the channel flow were considered. Four types of blades, rectangular, trapezoidal, serrated, and folding, were comparably modeled. The results showed that the vibrating blade could effectively enhance the convection heat transfer of the heated surface with a smaller increase of pressure drop. For the static environment, the heat transfer performance of the vertical alignment of the blade is better than the horizontal alignment. For channel flow, the opposite conclusion is obtained. For the inlet velocity of channel flow vinlet=2 m/s and vinlet=6 m/s, the maximum improvement of the local convection heat transfer coefficient is about 98% and 12%, respectively. The corresponding pressure drops were reduced and increased by 9.5% and 8.8%, respectively. The vibrating blade can effectively improve the convection heat transfer at lower inlet velocity. Under the same working conditions, the pressure drop difference between the four shapes of fan blades is less than 1%, and the folding blade has the best local heat dissipation performance.

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