Numerical investigation of a novel manifold micro-pin-fin heat sink combining chessboard nozzle-jet concept for ultra-high heat flux removal

被引：43

作者：

Ju, Xing ^{[1
]}

Xu, Chao ^{[1
]}

Zhou, Yiting ^{[1
]}

Liao, Zhirong ^{[1
]}

Yang, Yongping ^{[1
]}

机构：

[1] North China Elect Power Univ, MOE, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2018年 / 126卷

基金：

中国国家自然科学基金;

关键词：

Micro-pin-fin; Manifold; Impinging-jet; Cooling; Heat sink; HYBRID SOLAR-SYSTEMS; THERMAL OPTIMIZATION; PHOTOVOLTAIC CELLS; ELECTRONIC DEVICES; FLOW; PERFORMANCE; EXCHANGER; DESIGN; ARRAYS;

D O I：

10.1016/j.ijheatmasstransfer.2018.06.059

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, a novel heat sink combining the manifold flow distributor, impinging nozzle-jet, and micro pin-fin concepts is proposed. The flow distribution structure of the heat sink is inspired by black and white fields of the chessboard. Every inlet nozzle is surrounded by four outlet nozzles and vice versa. A 3-dimensional numerical simulation model of the basic heat sink structure is introduced to investigate the thermal and hydrodynamic performances. Several configurations with different pin-fin and nozzle geometries and its sensitivity to the geometrical parameters are discussed for optimization. Designs with different numbers of pin-fins in the unit cell of heat sink are also compared. The results show that, for a 2 x 2 cm(2) chip or photovoltaic, a total thermal resistance of 9.37 x 10(-6) Km(2)/W is achieved at a flow rate of 1 L/min and a pressure drop of 4928 Pa. A maximum cooling capacity of 700 W/cm(2) can be satisfied with the temperature difference between the fluid inlet and chip of 65.5 K, and the temperature non uniformity of the heating surface of only 2.33 K. The numerical results indicate that the novel heat sink shows great advantages of both uniform flow distribution and ultra-high heat flux cooling. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：1206 / 1218

页数：13

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