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研究生:莊卜榮
研究生(外文):Pu-Jung Chuang
論文名稱:螺旋式冷媒壓縮機時變三維內流場數值解析
論文名稱(外文):Numerical Investigation of Time-Varying Three-Dimensional Internal Flowfield in a Refrigerant Screw Compressor
指導教授:楊安石楊安石引用關係
指導教授(外文):An-Shik Yang
口試委員:溫志湧施陽正
口試委員(外文):Chih-Yung WenYang-Cheng Shih
口試日期:2012-06-15
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:能源與冷凍空調工程系碩士班
學門:工程學門
學類:其他工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:44
中文關鍵詞:螺旋壓縮機計算流體力學動態網格
外文關鍵詞:Screw CompressorCFDDynamic Mesh
相關次數:
  • 被引用被引用:2
  • 點閱點閱:312
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  • 收藏至我的研究室書目清單書目收藏:0
螺旋式壓縮機(Screw Compressor)為藉電動馬達、渦輪機或內燃機所產生的機械功而減少壓縮腔體體積、並提升冷媒氣體壓力之旋轉機械。本研究目標為利用計算流體力學數值模擬方法,針對商用冷媒雙螺旋壓縮機為實例,以建立冷媒雙螺旋壓縮機壓縮流場分析技術。分析理論模型求解的數學式包含可壓縮氣體紊流三維、暫態的質量、動量與能量守恆等方程式,依據SIMPLEC程序進行數值計算,並採用k-ε兩方程式紊流模型考慮紊流效應,以決定包含速度、壓力、溫度等重要特性。建置數值模型以壓縮機螺旋齒型沿軸向以固定轉速轉動,另採用動態網格(Dynamic Mesh)系統處理公母轉子囓合動作以模擬冷媒雙螺旋壓縮機內流場現象。藉本研究將成功發展出完整冷媒雙螺旋壓縮機內部流場系統模擬技術,對我國新世代環保冷媒螺旋壓縮機自主設計分析能力的建立具實質成效。

This research aims to apply the computational fluid dynamics (CFD) analysis method for establishing the flow simulation technology inside a commercial refrigerant screw compressor. The theoretical model is based on the unsteady three-dimensional conservation equations of mass, momentum and energy for the compressible turbulent flow with a k-ε two- equation turbulent model adopted for turbulence closure. Using the finite control volume approach, the iterative semi-implicit method for pressure-linked equations consistent (SIMPLEC) numerical scheme was used for the velocity-pressure coupling to determine the velocity, pressure, and temperature. Since the male and female rotors of the compressor rotate along the axial direction at a fixed speed, the dynamic mesh technique is implemented to explore the internal flow phenomenon inside the compressor. The results obtained from this investigation can be useful to advance the research/development capabilities for Taiwan’s screw compressor technology.

摘 要 i
ABSTRACT ii
誌 謝 iii
目 錄 iv
表目錄 v
圖目錄 vi
第一章 緒論 1
1.1 螺旋壓縮機發展與應用 1
1.2 文獻回顧 3
1.3 研究目標 6
第二章 理論方法 7
2.1 理論分析 7
2.2 模擬軟體介紹 14
2.3 數值方法 19
第三章 結果與討論 23
3.1 數值網格建立 23
3.2 暫態週期性穩定 26
3.3 螺旋式壓縮機內流場研析 28
3.4 螺旋壓縮機洩漏流場研析 38
第四章 結論 40
4.1 總結分析 40
參考文獻 41
符號彙編 44

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