臺灣博碩士論文加值系統

針對考量多層結構平板間接觸熱阻影響的三維多層結構結合高性能冷板之即時互動電腦輔助散熱設計，本研究成功地在微軟視窗2000工作平台上發展出一套具有親和力的即時3D動態多媒體電腦輔助設計系統。此電腦輔助設計系統之特點，乃在於能處理多層結構平板間接觸熱阻的影響以及任意結構冷板的表面熱傳幾何特性參數。此外，本系統結合OpenGL程式庫，提供使用者一個具有即時3D動態效果的互動式操作介面。
此多媒體電腦輔助設計系統包括前置處理次系統、多層結構冷板的散熱分析次系統、後置處理次系統及相關資料庫，在本論文中簡要的介紹所有相關次系統的基本設計概念與方法。本研究開發出的前置處理次系統擁有極具親和力之彩色視窗介面，能輕易讓一般使用者經由視窗介面設定改良型多層結構冷板散熱設計所需之輸入參數。在主視窗中包含下列五個設計選項供使用者選擇，即（1）離散熱源幾何形狀、位置與發熱量；（2）多層結構體材質、結構體間接觸面的介質與施加壓力；（3）冷板內部結構種類；（4）工作流體種類；（5）環境條件。在前置處理次系統的資料庫中共內建了五十四種散熱片結構相關幾何及熱流特性，十八種多層結構材質特性，四種結構體接觸面介質特性，七種結構體表面加工特性，七種冷板散熱片材質特性及兩種工作流體特性。其中在使用者選取冷板內部結構種類時，可自訂散熱片尺寸而不必侷限於五十四種內建的散熱片。當所需的輸入參數完成後，使用者可以看到整個設計的立體模型，並考量做進一步的修改。在研究中亦成功地建立三維多層結構冷板的散熱次分析系統，此散熱分析能有效考量結構體間接觸熱阻對整體散熱效果的影響。經由此分析軟體計算，能得到冷板外側之多層結構體表面上的溫度分佈數據。此溫度分佈數據可應用本研究中所發展出之後置處理次系統繪出彩色等溫圖於前置處理次系統中建立的立體模型表面上。使用者可以將模型針對x, y, z軸做旋轉或是改變視窗大小來檢視最終結果。因此，在研究中更進一步地整合上述前後置處理次系統、熱分析軟體與資料庫，而完成一套多媒體電腦輔助設計系統。
最後，本研究應用此開發出的多媒體電腦輔助設計軟體從事一系列參數探討與實際應用的設計範例探討，結果皆驗證了本研究中開發出的改良型多層結構冷板電腦輔助設計系統的優越性。

A novel 3-D real-time animated thermal CAD system for electronics multilayer structures having interfacial contact resistances integrated with a compact cold plate has been successfully developed on Microsoft Windows 2000 system. The thermal CAD system is composed of pre-processor subsystem, thermal analyzer, post-processor subsystem and relevant user interfaces and databases. The fundamental design concepts for the developed pre-processor, thermal analyzer, and post-processor are introduced. The developed pre-processor has six options such as the selection of heat sources, multilayer structures, cold-plate core, working fluid, ambient conditions, and current data. The effect of thermal contact resistance between contact solids has been considered in the thermal analyzer. In addition, a new set of curve-fitting correlations related to the dimensionless pumping power factor (F) and heat transfer performance factor (J) have also been installed in the analyzer. The post-processor can interactively generate real-time color isotherms on the heated surface of 3-D cold-plate model. Furthermore, new multimedia technologies with OpenGL libraries, such as graphical illustrations and real-time 3-D visualization, employed in the present developed CAD system provide a very friendly and interactive interface for users. To explore the parameters and conditions influencing thermal performance, a series of parametric studies have been systematically performed. The parameters and conditions explored include the size and heat dissipation rate of heat sources, the first-layer material of multilayer structures, contact conditions between multilayer structures, type of core configuration, coolant properties and type of convection at external ambient. With the developed thermal CAD system, three practical thermal design cases for multilayer structures integrated with a compact cold plate have been studied. The superiority of the developed CAD system has been demonstrated.

摘要
目錄
第一章 緒論
第二章 熱分析軟體之發展
第三章 前置處理系統與後置處理系統
第四章 電腦輔助系統的整合
第五章 結果與討論
第六章 結論與建議
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