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系統識別號 U0026-2408201210534500
論文名稱(中文) 並列式板鰭管式熱交換器之三維數值模擬分析
論文名稱(英文) Three-dimensional Numerical Analysis of In-line Plate Finned-tube Heat Exchangers
校院名稱 成功大學
系所名稱(中) 機械工程學系專班
系所名稱(英) Department of Mechanical Engineering (on the job class)
學年度 100
學期 2
出版年 101
研究生(中文) 胡國強
研究生(英文) Kuo-Chiang Hu
學號 n17961057
學位類別 碩士
語文別 中文
論文頁數 97頁
口試委員 指導教授-陳寒濤
口試委員-李訓谷
口試委員-劉國基
中文關鍵字 三維數值分析法  板鰭管式熱交換器  熱傳性能 
英文關鍵字 three-dimensional numerical analysis  plate finned-tube heat exchangers  heat-transfer characteristics 
學科別分類
中文摘要 本文以三維流體力學電腦模擬法預測於不同鰭片間距下,兩支圓管為同線排列(In-line arrangement)之板鰭管式熱交換器的平均熱傳係數 與等溫平均熱傳係數 ,並且進一步與文獻中以數值逆算法結合實驗數據來預測之平均熱傳係數 與等溫平均熱傳係數 比較。本文利用套裝軟體Icepak配合文獻之實驗數據以求得鰭片間之流場流動情形及鰭片上各量測點的溫度值,模擬結果顯示於自然對流條件下, 及 會隨著鰭片間距增加而增加,並且會逐漸趨近某一固定值。於混合對流條件下, 及 會隨著外界風速及鰭片間距的增加而增加。再者,為了證明本文結果之可靠性,本文之 值與目前存在之經驗公式或數值逆算法所求得之結果相比較,以驗證反算方法之準確性及先前經驗公式之合理性。
英文摘要 The present study applies the Three-dimensional numerical analysis methods to predict the average heat transfer coefficient and heat transfer coefficient under the isothermal situation on a vertical square fin of the two-tube plate finned-tube heat exchangers for in-line arrangements and various fin spacings . And further with compare the numerical inverse scheme with the experimental data in the literature to predict the average heat transfer coefficient and heat transfer coefficient under the isothermal situation . In additions, the present study also applies the commercial software ‘Icepak’in conjunction with the present experimental data to obtain the inter-fin flow field of the plate finned-tube heat exchanger and temperature measurements at various measurement locations of the fin. Results show that and in nature convection increase with increasing the fin spacing S. These values can respectively approach their corresponding asymptotic values obtained from a single square fin as S . However, and in mixed convection increase with increasing the S and air velocity. Furthermore, in order to prove the reliability of the present heat transfer coefficient under the isothermal situation results . Compared with some of the experimental formula and inverse scheme results can be obtained to verify their accuracy and reasonableness.
論文目次 中文摘要……….I
ABSTRACT……II
誌謝…………...IV
目錄……………V
表目錄………VIII
圖目錄………….X
符號說明………XV
第一章 緒論 1
1-1研究背景 1
1-2文獻回顧 3
1-3研究目的 7
1-4研究重點與本文架構 7
第二章 自然對流之數值模擬分析 9
2-1簡介 9
2-2統御方程式 11
2-3邊界條件 13
2-4網格建立 14
2-5求解方法 14
2-6網格測試 15
2-7收斂條件 16
2-8模擬分析 16
2-9結果與討論 18
第三章 混合對流之數值模擬分析 52
3-1簡介 52
3-2統御方程式 53
3-3邊界條件 55
3-4網格測試 56
3-5收斂條件 57
3-6模擬分析 57
3-7結果與討論 59
第四章 綜合結論與未來展望 90
4-1數值模擬結果 90
4-2綜合結論 91
4-3未來發展方向與建議 91
參考文獻 93
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