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研究生:林立偉
研究生(外文):Li-Wei Lin
論文名稱:散熱鳍片擴散熱阻之模擬分析
論文名稱(外文):The Thermal Analysis of Spreading Resistance for Heat Sinks
指導教授:林 育 才
指導教授(外文):Yur-Tsai Lin
學位類別:碩士
校院名稱:元智大學
系所名稱:機械工程學系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:93
語文別:中文
論文頁數:103
中文關鍵詞:散熱鰭片擴散熱阻田口式實驗設計法
外文關鍵詞:Heat sinksThermal spreading resistanceTaguchi method
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隨著電子構裝功率的增加以及構裝尺寸的減小,熱管理將變的更加重要,其中散熱鰭片為最常見的散熱裝置。為了增進散熱效能,散熱鰭片的體積將增加,這將與小面積的發熱元件產生接觸面積上的差異,進而造成擴散熱阻,而擴散熱阻為影響散熱效能的一個重要因素。
本研究旨在於嘗試改變各種參數,如熱源面積、鳍片基底厚度、鳍片高度、鳍片片數、流體的風速等,以分析各參數對熱阻及擴散熱阻的影響,並使用田口式實驗設計法以期找到擴散熱阻最小的最佳化鰭片模型。另外,為達到快速分析測試的目的,本研究使用模擬軟體來探討散熱鰭片的性能。
而結果顯示出,改變鰭片基底厚度對同時降低熱阻與擴散熱阻有最明顯的效果,而田口式實驗設計法也可以達到準確預測最佳化參數組合的目的。
The heat sinks are usually used in the electronics industry to maintain or improve the performance of the electronic devices. When there is size discrepancy between the heat sink and the package, thermal spreading resistance is involved between the heat source and the heat sink. The thermal spreading resistance is hence an important factor for the efficiency of the thermal dissipation of the heat sinks.
In this thesis several factors, such as the area of the heat source, the thickness of the heat sink base, the height of the heat sink, the number of the fin, and the inlet air velocity have been investigated to find the optimization of the heat sinks. Moreover, the Taguchi method is also used to find the best combination of above factors to reduce the thermal spreading resistance. In the present study, numerical analysis has been employed as an analysis tool to obtain corresponding information.
The results show that among the above parameters the thickness of the heat sink base plays the most important role on the thermal spreading resistance, and the Taguchi method can be used to predict the best combination of parameters effectively
第一章 緒論 1
1.1 前言 1
1.2 文獻回顧 2
1.3 研究目的 7
第二章 理論模式 8
2.1熱阻定義 8
2.2散熱鰭片熱阻的理論基礎 8
2.3擴散熱阻(Spreading Resistance) 9
2.4擴散熱阻之理論基礎 9
第三章 研究方法 11
3.1ICEPAK簡介 11
3.2 MODEL 建立 11
3.2.1邊界條件 12
3.2.2參數改變 12
3.3收歛之認定 13
3.4格點數的收斂 14
3.5 田口式品質工程技術及實驗設計法 15
3.5.1 簡介 15
3.5.2 田口式實驗設計法原理 16
3.5.2.1 品質損失函數之概念 16
3.5.2.2 二階品質損失函數 17
3.5.2.3 直交表 20
3.5.3 參數最佳化程序 21
3.5.3.1 定義目標函數 21
3.5.3.2 定義設計因子及水準表 22
3.5.3.3 設計直交表 22
3.5.3.4 數據分析 22
3.5.3.5 平均數分析 23
第四章 結果討論 25
4.1 加熱面積大小的影響 25
4.2長板型鰭片未分割 26
4.2.1鰭片基底厚度的影響 26
4.2.2鰭片片數的影響 27
4.2.3鰭片高度的影響 28
4.2.4 風速的影響 29
4.3長板型鰭片橫切割一道 30
4.3.1鰭片基底厚度的影響 30
4.3.2鰭片片數的影響 31
4.3.3鰭片高度的影響 31
4.3.4 風速的影響 32
4.4長板型鰭片橫切割三道 32
4.4.1鰭片基底厚度的影響 32
4.4.2鰭片片數的影響 33
4.4.3鰭片高度的影響 34
4.4.4 風速的影響 34
4.5 其他長板型鳍片 35
4.6 田口式設計法規劃結果討論 35
第五章 結論 39
參考文獻 101
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