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Journal of Enhanced Heat Transfer
IF: 0.562 5-Year IF: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN Print: 1065-5131
ISSN Online: 1026-5511

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.2019030135
pages 451-470

EXPERIMENTAL STUDY OF MIST JET IMPINGEMENT COOLING

Vikash Kumar Singh Chauhan
Department of Mechanical Engineering, National Institute of Technology, Manipur, Imphal, Manipur 795004, India
Dushyant Singh
Department of Mechanical Engineering, National Institute of Technology, Manipur, Imphal, Manipur 795004, India
Dr. Singh works in a general area of fluid flow and heat transfer with a focus on understanding the flow physics and heat transfer characteristics of the complex problem in advanced industry problem, along with experimentally and numerically of interest.

ABSTRACT

In this paper, an experimental study of mist jet impingement cooling over a heated flat surface is performed to identify the effect of Reynolds number, nozzle-to-plate spacing, and mist loading fraction. The parametric experiments were performed for Reynolds numbers ranging from 10,000 to 40,000, nondimensional nozzle-to-plate spacing of 32–56, and loading fraction ranging from 0 to 1%. The present study indicated that the Reynolds number (Redhyd ) and the loading fraction (f) increases the Nusselt number, whereas increasing the h/d ratio adversely affects the cooling. It is concluded that the loading fraction has the highest impact on the cooling controllability, while the Reynolds number and the h/d ratio have a secondary and tertiary impact on the cooling. Furthermore, based on the experimental results, a correlation function is developed. It is elucidated that a good correlation function can act as a better alternative over costly and prolonged experiments.

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