柱型散熱鰭片幾何尺寸影響熱傳性能之研究

Effect of Dimensions of Cooling Pin-Fins on Heat Transfer Performance

劉興和(Shing-He Liou)

指導教授 ： 蔡瑞益

中原大學/工學院/機械工程研究所/碩士(2005年)

https://doi.org/10.6840/cycu200500715

摘要

中文摘要
本文主要研究空氣噴射衝擊散熱鰭片冷卻熱點之熱傳狀況。散熱鰭片的幾何尺寸與雷諾數，是影響冷卻效果的主要研究參數。其中散熱鰭片為9×9陣列式柱型鰭片，散熱鰭片底部尺寸為70mm×70mm×3mm，鰭片寬度分別為4mm、5mm、6mm，高度分別為30mm、40mm、50mm，雷諾數範圍5000~30000，熱點尺寸為30mm×30mm，其熱功率30W，使用計算流體力學套裝軟體PHOENICS，模擬採用紊流模式，計算探討溫度場與鰭片流道中壓力分佈。
本文經模擬分析，得出在下列三種條件參數下有較好的散熱效果：(1)雷諾數為30000時。(2)鰭片寬度為6mm時。(3) 鰭片高度為50mm時。

關鍵字

熱點 ； 衝擊冷卻 ； 散熱鰭片 ； 電子冷卻

並列摘要

ABSTRACT
The main purpose of this study is to research the heat transfer of hot spot for air impingement flow on a heat sink. The dimension of heat sink and Reynolds number are the main parameters affecting the cooling efficiency. In this study, the heat sink is square pin-fin and a 9×9 pin-fin array. The dimension of heat sink base is 70mm×70mm×3mm, and a fin width is 4, 5, and 6 mm, height is 30, 40, and 50 mm. The range of Reynolds number is 5000~30000, and the dimension of hot spot is 30mm×30mm, and the power is 30W. The PHOENICS software CFD package is used for calculating the temperature field and the pressure of heat sink channel.
After the model had simulation and analysis, we can find three better characteristic conditions for cooling efficiency: (1) Reynolds number is 30000. (2) heat sink width is 6mm. (3) heat sink height is 50mm.

並列關鍵字

hot spot、impingement cooling、heat sink、electronic co

參考文獻

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