臺灣博碩士論文加值系統

本論文使用計算流體力學軟體CFD-ACE+建立三角翼渦流產生器與散熱鰭片之三維模型，配合拉凡格式法(Levenberg-Marquardt Method)以降低散熱鰭片之底板平均溫度為目的來反算出三角翼渦流產生器最佳化之形狀及擺放位置。

本論文分別使用平板型與柱型散熱鰭片作為散熱片模型，分析不同鰭片與不同風速下最佳化三角翼渦流產生器結果的差異，Case 1為使用平板型散熱鰭片探討在入口風速=1.2 m/s、1.8 m/s及2.4 m/s時的渦流產生器最佳化結果，Case 2為使用柱型散熱鰭片探討在入口風速=1.2 m/s、1.8 m/s及2.4 m/s時的渦流產生器最佳化結果，兩種案例皆以降低散熱鰭片之底板平均溫度為目標，並最佳化渦流產生器在不同入口速度下的擺放位置及形狀。最後本論文利用實驗驗證模擬的準確性，使用紅外線熱像儀量測實體散熱模型的表面溫度，並與數值模擬結果比對，以確定模擬結果的可靠性。

A three-dimensional inverse design problem is examined in this thesis using a general purpose commercial code (CFD-ACE+) and the Levenberg-Marquardt Method (LMM) to estimate the optimal positions and shapes for delta winglet vortex generators of heat sinks with different design variables.

The objective of this thesis is to minimize the average temperature on the base plate of heat sinks and to obtain the optimal positions and shapes for delta winglet vortex generators of heat sinks. The study consists of two cases. In case 1, Delta winglet vortex generators are used on a plate-fin heat sink to estimate the optimization design when the inlet velocity equal to 1.2, 1.8 and 2.4 m/s, respectively. In case 2, Delta winglet vortex generators are used on a pin-fin heat sink to estimate the optimization design when the inlet velocity equal to 1.2, 1.8 and 2.4 m/s, respectively.

Finally, these heat sink and vortex generators modules are carried on the experimental verification. The results of temperature distributions are very similar between the experimental and numerical data.

摘要 I
英文延伸摘要 II
誌謝 V
目 錄 VI
圖 目 錄 VIII
表 目 錄 XV
符號說明 XVI
第一章 緒論 1
1-1 前言 1
1-2 研究背景與目的 2
1-3 文獻回顧 4
第二章 數值模擬 9
2-1 直接解問題 9
2-2 渦流產生器設計問題：獲得最小底板平均溫度(或熱阻) 11
2-3 拉凡格式法之極小化過程 14
2-4 數值計算流程 16
第三章 結果與討論 23
第四章 實驗驗證 46
4-1 紅外線輻射原理 46
4-2 實驗設備 46
4-2.1 散熱鰭片模型 46
4-2.2 三角翼渦流產生器模型 47
4-2.3 紅外線熱像儀 47
4-2.4 風洞 48
4-2.5 加熱設備 49
4-2.6 風速計 49
4-2.7 溫度量測設備 50
4-3 實驗方式 50
4-4 實驗結果與討論 51
第五章 結論 100
參考文獻 103

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