臺灣博碩士論文加值系統

本論文使用Beta型史特靈引擎作為研究載體，運用二階段的田口方法進行最佳化分析與設計，透過計算流體力學軟體FLUENT進行數值模擬分析。第一階段使用L12表進行篩選實驗，選用的因子包含加熱源、缸徑衝程比、冷熱汽缸之材料特性、移氣器與汽缸壁之間隙、連桿與曲柄軸長度等，判斷出各因子間，對指示功率的影響程度。透過L12的篩選，排除影響較小的因子，將因子水準數由二增加至三，目的為從較大範圍中，找出最佳的尺寸比例，即為第二階段L18表的實驗，並於最後進行最佳化預估與實驗，將結果再進行一次模擬，以確保實驗的正確性。透過田口方法的最佳化參數研究，可以決定機構的尺寸，並進行機構的設計與分析，機構分析內容包含曲柄軸於引擎運轉過程中，轉動慣量的平衡、震動分析。最後目標為史特靈引擎的製作，包含引擎工程圖的繪製、公差標註與製造、史特靈引擎的耐久性測試與性能量測。

A Beta-type Stirling engine is used as a main platform in this study. There are two stages of Taguchi method applied for optimal analysis and design. The experiments are implemented through commercial computational fluid dynamic software, FLUENT. Table L12 is applied to the experiments. The experimental factors includes heat source, bore-stroke ratio, material properties of heat and cold cylinder, gap between displacer and cylinder, length of linkage and crankshaft. The effect of the above-mentioned factors on the indicated power will be investigated. The factors of less important can be excluded through table L12. For the next stage, the levels of factors are increasing from two to three. The increasing levels are mainly used for selecting the optimized dimensions of the engine. The table L18 is used in the following stage. Finally, after selecting the factors via table L¬¬12 and L18, the confirmation experiment will be executed. The validation can make sure that the analysis processes are appropriate.
The dimensions of engine mechanism are determined from parametric study by Taguchi method. In addition, the analysis and design of mechanism is also carried out. The moment inertia and balance of crankshaft, and engine vibration analysis are also involved in this design process.
Drawing engineering graphics, evaluating tolerance and engine fabricating are all considered in this project. Furthermore, endurance test of engine and performance test will be performed. This study includes analysis, design, fabricating and test processes, and the complete developing workflow of a Stirling engine can be obtained.

目錄
第一章 前言 1
1.1 研究背景與目標 1
1.2 研究的重要性 3
1.3 相關文獻回顧 3
1.4 論文內容 9
第二章 史特靈引擎簡介 14
2.1 史特靈引擎優點 15
2.2 史特靈引擎原理 16
2.3 史特靈引擎種類 17
2.4 史特靈引擎子系統 18
第三章 數值方法與基本假設 22
3.1 基本假設與統御方程式 22
3.2 史特靈引擎模型建構 26
3.3 邊界條件與起始條件 27
3.4 分析流程說明 30
第四章 田口實驗方法 37
4.1 田口實驗法簡介 37
4.2 田口實驗法流程 38
4.3 最佳化結果討論 46
第五章 機構設計與最佳化討論65
5.1 曲柄軸動態平衡設計 65
5.2 曲柄軸設計結果討論 68
第六章 結論與未來展望 88
6.1 結論 88
6.2 未來展望 89

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