二維對稱噴流對電子元件熱點衝擊冷卻之熱傳機制研究

A Study of Heat Transfer for Impingement Coolant on Hot Spot of Electronic Components by a 2-D Symmetric Laminar Jet

黃世嘉(Shih-Chia Huang)

指導教授 ： 蔡瑞益

中原大學/工學院/機械工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300463

摘要

本文研究二維對稱噴流冷卻之熱點熱傳狀態。噴射入口直徑、流道寬度與雷諾數，是影響噴射流衝擊冷卻效果的重要參數。文中使用噴射入口直徑為5、8、10mm，流道寬度為30、50、80mm，雷諾數為250~700，且噴流雷諾數以2倍的入口直徑衝的水利直徑為基準，衝擊璧為一絕熱平滑平板，熱點尺寸為35mm，且其熱通量設定為60 W/ ，使用計算流體力學套裝軟體PHOENICS，建立層流軸對稱噴流模型，並計算探討二維對稱流之流場和溫度場。
本文經模擬分析，得出在三種環境條件下有最好的散熱效果：（1）當雷諾數為700時。（2）在流道最窄時。（3）在最小入口口徑時。

關鍵字

熱點 ； 噴射流 ； 衝擊冷卻 ； 電子冷卻

並列摘要

The main purpose of this study is to investigate the heat transfer of hot spot for 2-D laminar jet impingement coolant. The jet diameter, channel wide, and Reynolds number are two important parameters on the cooling efficiency of jet impingement coolant. In this study, the range of jet diameter is 5,8,and 10 mm, channel wide is 30,50,and 80 mm, and Reynolds number is from 250 to 700. The jet Reynolds number based on a hydraulic diameter of double jet diameter. The impingement wall is smooth and adiabatic, and the hot spot size is 35 mm and constant heat flux 60 W/㎡. The PHOENICS CFD code is for calculating the flow field and temperature field of 2-D laminar jet impingement coolant model.
The model analysis has the following conclusions; there are three the best heat transfer condition of hot spot. (1) Reynolds number is 700. (2) The narrowest channel wide. (3) The smallest jet diameter.

並列關鍵字

electronic coolant ； hot spot ； impingement coolant ； jet flow

參考文獻

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