The Behavior of Variable Zone for Concave Arcs -Fin of Heat Sink with Multi Air Jet Impingement

Dalmn Yaseen Taha ,Dhamyaa Saad Khudhur ,Layla Matter Nassir

doi:10.7176/cmr/13-2-02

Abstract

Novel array arcs- fin heat sink 7×2 with 6×2 multi air jet impingement are presented in this paper by using numerical simulation. Temperature distribution of jets diameter of 5mm and arcs- fin heat sink with variety shapes at constant radius of 45mm are evaluated. Reynolds number ranges from 7000 – 11000. The study has been done at constant Z/d= 6 and constant heat flux =8333.33 W/m 2 . The best shapes of fins has an effective role in improving the rate of heat transfer .In this paper, the design concerned in arcs ships to construct fin geometry. Four concave arcs constricted the shape of fins heat sink for model A. This model has been changed to construct models (B-C-D-E) by reflect two concave arc from it to be convex arc. All five models at the same radius. The five configurations were comparative between each other and the best model comparative with flat plate heat sink. It is observed that model D of heat sink showed best temperature dissipation than the others. The results of this paper can help to select heat sink that meets a design's thermal, Power, packaging and cost requirements (specialized in arcs fins) with array of impingement jet, which is a popular used in cooling electronic devices. Keywords: arcs –fin heat sink; array of impingement jet; CFD. DOI: 10.7176/CMR/13-2-02 Publication date: May 31 st 2021

Highlights

High performance of heat dissipation from electronic device is important appropriate to maintain a systems performance and reliability, to conserve a compact size and to lower the operating cost
Thin boundary layer is formed on a heated target surface in jet impingement technique, which results in higher convective heat transfer coefficient
A lot of studies utilized air fluid on multi jet impingement on flat plate or extended surfaces, but at the traditional shape like, and with array of jet or single .It has been reported that novel of array impingement jets have a distinguishing of multiple stagnation regions which results in the improvement of heat transfer

Summary

Introduction

High performance of heat dissipation from electronic device is important appropriate to maintain a systems performance and reliability, to conserve a compact size and to lower the operating cost. One of the best components used in such cooling systems is the heat sink. The idea of heat sink cooling is to provide extend surface area for dissipating the heat load from the device [1]. Aluminum is one of the best material industrial the heat sinks due to light weight, in industrial, lower cost with acceptable performance [2]. A lot of studies utilized air fluid on multi jet impingement on flat plate or extended surfaces, but at the traditional shape like (pin- fin), (rectangular- fin) and (hexagonal shape) with array of jet or single .It has been reported that novel of array impingement jets have a distinguishing of multiple stagnation regions which results in the improvement of heat transfer

Objectives

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Discussion

Conclusion