The Heat Transfer Characteristics of Rolling Wheel and the Characteristic Length Determining Them-Reference-Cited by-同舟云学术

The Heat Transfer Characteristics of Rolling Wheel and the Characteristic Length Determining Them

Published:2016-03-01 Issue:5 Volume:138 Page:
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Wang Liangbi¹²,Zhang Yongheng¹³,Wu Yuan¹³,Wang Qiuwang⁴,Yin Zhihui¹³

Affiliation:

1. School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China;

2. Key Laboratory of Railway Vehicle Thermal Engineering, Ministry of Education of China, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China e-mail:

3. Key Laboratory of Railway Vehicle Thermal Engineering, Ministry of Education of China, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China

4. Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China

Abstract

The convective heat transfer characteristics on the surface of a rolling wheel are investigated using the naphthalene sublimation technique. Five sizes of rolling wheel are selected in the experiments. The local and average Nusselt numbers are obtained. The results reveal that if the wheel radius is used as the characteristic length, the relationship between Nusselt number and Reynolds number is dependent on the wheel radius. This indicates that the wheel radius is not the characteristic length to determine the dimensionless convective heat transfer characteristics of the rolling wheel. Thus, a newly defined characteristic length is provided. For different radii of the wheel, the relationships between Nusselt number and Reynolds number based on this length collapse into one reasonable correlation. The correlation not only enriches the insight of convective heat transfer on rolling wheel but also extends the applicability of the present experimental data.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/doi/10.1115/1.4032607/6211893/ht_138_05_051705.pdf

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