入口位置及角度对微通道散热器内流体流动与传热的影响

doi:10.16085/j.issn.1000-6613.2021-1301

摘要/Abstract

摘要：

为进一步提升等截面微通道热沉的散热性能，本文设计了双进口-单出口型微通道热沉，并采用数值模拟的方法研究了入口上侧边布置、左侧边布置以及不同入口角度时去离子水在微通道热沉内的流动和传热特性。结果表明，进出口布置方式对微散热器内各通道流量分配有很大影响，而流量分配直接影响热沉的温度分布。入口上下侧边布置时流体的分布更加均匀，热沉的热阻和泵功较小。入口角度的减小降低了热沉底面温度，并使底面温度更加均匀。当Re=365时，θ=45°的底面最高温度比θ=90°时降低了1.91℃，但泵功却显著增大。

关键词: 微通道, 数值模拟, 传热, 入口位置, 流量分配

Abstract:

In order to further improve the heat dissipation performance of microchannel heat sink (MCHS) with equal cross-section, a two inlet ports-one outlet port MCHS was proposed in this paper. The flow and heat transfer characteristics in MCHS where the inlet ports were arranged at the upper side or the left side walls with different angles were analyzed by numerical simulation. The results showed that the layout of inlet and outlet ports had a great influence on flow distribution of each channel in the microchannel heat sink, and the temperature distribution was directly influenced by flow distribution. When the inlet ports are located at side walls of the heat sink, the fluid distribution was more uniform, and the thermal resistance and pump work of heat sink were smaller. The decrease of inlet ports angle reduced the bottom temperature of MCHS and made the bottom temperature more uniform. When Re was at 365, the maximum plate temperature at θ=45° was 1.91℃ lower than that at θ=90°, but the pumping power increased significantly.

Key words: microchannels, numerical analysis, heat transfer, inlet port position, flowdistribution

中图分类号:

TK124

贾玉婷, 姚森, 王景涛, 李洪伟. 入口位置及角度对微通道散热器内流体流动与传热的影响[J]. 化工进展, 2021, 40(12): 6423-6431.

JIA Yuting, YAO Sen, WANG Jingtao, LI Hongwei. Influence of inlet port position and angle on flow and heat transfer of microchannel heat sink[J]. Chemical Industry and Engineering Progress, 2021, 40(12): 6423-6431.

图/表 18

图1 不同入口位置的微通道热沉结构

表1 微通道热沉的结构尺寸 (mm)

几何参数	尺寸	几何参数	尺寸
W	8.8	W_out	2
L	13	W_ch	0.2
L_ch	8	W_fin	0.2
L_t	2	H_ch	0.3
W_in	1	H	0.4

图2 数值计算与理论计算结果比较

图3 不同入口位置微通道热沉x-y面的温度分布

（z=0.05mm，Re=731）

图4 不同入口位置微通道热沉底面平均温度随Re的变化

图5 不同入口位置微通道热沉各个通道的质量流量分布情况

图6 不同入口布置位置微通道热沉x-y面流线和速度分布（z=0.25mm，Re=731）

图7 不同入口布置位置微通道热沉泵功随Re的变化

图8 不同入口布置位置微通道热沉x-y面的压力分布

（z=0.05mm，Re=731）

图9 微通道热沉泵功和热阻随入口布置位置的变化

图10 具有不同入口角度的微通道热沉结构

图11 微通道热沉不同入口角度下x-y面的温度分布

（z=0.05mm，Re=548）

图12 微通道热沉各个通道的质量流量分布情况

图13 入口角度对微通道热沉底面最高温度的影响

图14 微通道热沉不同入口角度下x-y面的速度及流线分布

（z=0.05mm，Re=548）

图15 入口角度对微通道热沉泵功的影响

图16 微通道热沉不同入口角度下x-y面的压力分布

（z=0.05mm，Re=548）

图17 入口角度对微通道泵功和热阻的影响

参考文献 19

1	TUCKERMAN D B, PEASE R F W. High-performance heat sinking for VLSI[J]. IEEE Electron Device Letters, 1981, 2(5): 126-129.
2	RAMESH K N, SHARMA T K, RAO G A P. Latest advancements in heat transfer enhancement in the micro-channel heat sinks: a review[J]. Archives of Computational Methods in Engineering, 2021, 28(4): 3135-3165.
3	杨鹏, 胡士松, 刘广飞, 等. Ni/Ag微纳结构强化顶部连通型微通道沸腾换热[J]. 化工进展, 2021, 40(5): 2526-2535.
	YANG Peng, HU Shisong, LIU Guangfei, et al. Enhancement of flow boiling heat transfer by using Ni/Ag micro/nano structures in a top-connected microchannel[J]. Chemical Industry and Engineering Progress, 2021, 40(5): 2526-2535.
4	马欣荣, 白鸿武. 双层Y形分叉仿生微通道换热性能及优化设计[J]. 科学技术与工程, 2018, 18(24): 112-117.
	MA Xinrong, BAI Hongwu. Heat transfer performance and optimization design of double-layer Y-shaped bifurcation biomimetic microchannel[J]. Science Technology and Engineering, 2018, 18(24): 112-117.
5	陈然, 唐晟. 基于金字塔形扰动结构的双层梯形微通道热沉传热性能模拟[J]. 化工进展, 2020, 39(S2): 19-25.
	CHEN Ran, TANG Sheng. Heat transfer performance simulation of double-layer trapezoidal microchannel heat sink based on pyramidal turbulence structure[J]. Chemical Industry and Engineering Progress, 2020, 39(S2): 19-25.
6	QIDWAI M O, HASAN M M, KHAN N Z, et al. Performance evaluation of simple radial fin design for single phase liquid flow in microchannel heat sink[J]. Proceedings of the Institution of Mechanical Engineers E: Journal of Process Mechanical Engineering, 2021, 235(1): 80-92.
7	LI Yifan, WANG Zhipeng, YANG Junlan, et al. Thermal and hydraulic characteristics of microchannel heat sinks with cavities and fins based on field synergy and thermodynamic analysis[J]. Applied Thermal Engineering, 2020, 175: 115348.
8	LAN Yongqi, FENG Zhenfei, HUANG Kui, et al. Effects of truncated and offset pin-fins on hydrothermal performance and entropy generation in a rectangular microchannel heat sink with variable fluid properties[J]. International Communications in Heat and Mass Transfer, 2021, 124: 105258.
9	KUMAR R, SINGH G, MIKIELEWICZ D. A new approach for the mitigating of flow maldistribution in parallel microchannel heat sink[J]. Journal of Heat Transfer, 2018, 140(7): 072401.
10	CHEIN R Y, CHEN J H. Numerical study of the inlet/outlet arrangement effect on microchannel heat sink performance[J]. International Journal of Thermal Sciences, 2009, 48(8): 1627-1638.
11	SEHGAL S S, MURUGESAN K, MOHAPATRA S K. Experimental investigation of the effect of flow arrangements on the performance of a micro-channel heat sink[J]. Experimental Heat Transfer, 2011, 24(3): 215-233.
12	XIA G D, JIANG J, WANG J, et al. Effects of different geometric structures on fluid flow and heat transfer performance in microchannel heat sinks[J]. International Journal of Heat and Mass Transfer, 2015, 80: 439-447.
13	夏国栋, 蒋静, 翟玉玲, 等. 进出口方式和槽道形状对微散热器内流量分配与传热的影响[J]. 北京工业大学学报, 2014, 40(12): 1869-1875.
	XIA Guodong, JIANG Jing, ZHAI Yuling, et al. Effect of inlet/outlet types and header design on the flow distribution and heat transfer in a micro heat radiator[J]. Journal of Beijing University of Technology, 2014, 40(12): 1869-1875.
14	刘东. 高热通量微结构散热器换热特性的研究[D]. 合肥: 中国科学技术大学, 2011: 21-30.
	LIU Dong. Study on the performance of micro-structure heat radiator for high heat flux equipment[D]. Hefei: University of Science and Technology of China, 2011: 21-30.
15	袁嘉隆. 基于不同入口角度下矩形微通道热沉流动和换热特性研究[D]. 厦门: 集美大学, 2015: 29-41.
	YUAN Jialong. Research on flow and heat transfer characteristic in rectangular micro-channel heat sinks based on different inlet angles[D]. Xiamen: Jimei University, 2015: 29-41.
16	MA D D, XIA G D, LI Y F, et al. Design study of micro heat sink configurations with offset zigzag channel for specific chips geometrics[J]. Energy Conversion and Management, 2016, 127: 160-169.
17	YADAV V, KUMAR R, NARAIN A. Mitigation of flow maldistribution in parallel microchannel heat sink[J]. IEEE Transactions on Components, Packaging and Manufacturing Technology, 2019, 9(2): 247-261.
18	KUMAR R, SINGH G, MIKIELEWICZ D. Numerical study on mitigation of flow maldistribution in parallel microchannel heat sink: channels variable width versus variable height approach[J]. Journal of Electronic Packaging, 2019, 141(2): 021009.
19	SHAH R K, LONDON A L. Laminar flow forced convection in ducts, supplement to advances in heat transfer [M]. New York: Academic Press, 1978: 17-36.

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