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http://dx.doi.org/10.3795/KSME-B.2017.41.5.329

A Study on Fluid Flow and Heat Transfer of a Corrugated Structure for Crossflow Reduction of Impingement Jet  

Hwang, Byeong Jo (School of Mechanical Engineering, Yonsei Univ.)
Kim, Seon Ho (School of Mechanical Engineering, Yonsei Univ.)
Joo, Won Gu (School of Mechanical Engineering, Yonsei Univ.)
Cho, Hyung Hee (School of Mechanical Engineering, Yonsei Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.41, no.5, 2017 , pp. 329-339 More about this Journal
Abstract
Impingement jets have been applied in a wide variety of fields as they provide significantly high heat transfer on the impingement-jet stagnation zone. However, the crossflow in an impingement chamber developed by spent wall jets can disrupt and deflect the downstream jets in the array, leading to a decrease in the cooling performance of an array of impingement jets. A numerical analysis is made of the fluid flow and heat transfer characteristics in a corrugated structure that traps the spent air in the corrugations between impingement jets and reduces crossflow effects on downstream jets. All computations are performed by considering a three-dimensional, steady, and incompressible flow by using the ANSYS-CFX 15.0 code. The effects of the configuration parameters of the corrugated structure on crossflow reduction of the array of impingement jets are presented and discussed.
Keywords
Impingement Cooling; Corrugated Structure; Crossflow; Array Jet; Turbulence Model;
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