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題 名 | 氣渦輪機動葉片熱流場分析=The Analysis of Thermal Flow Field Around Gas Turbine Moving Blade |
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作 者 | 陳景林; 李國楨; | 書刊名 | 台電工程月刊 |
卷 期 | 593 1998.01[民87.01] |
頁 次 | 頁1-12 |
分類號 | 448.14 |
關鍵詞 | 氣渦輪機; 動葉片; 數值模擬; 計算流體力學; Gas turbine; Moving blade; Numerical simulation; Computational fluid dynamics; |
語 文 | 中文(Chinese) |
中文摘要 | 由於備載容量不足及環保要求等因素,氣渦輪機組日益增多且在本公司電力調度 上的角色,已由以往的備載機組轉為尖峰發電機組,故評估氣渦輪機組葉片在高溫下之材質 變化,已是必要的課題。本研究主要係探討氣渦輪機動葉片翼表面溫度及速度場分佈,以作 為分析葉片有關高溫腐蝕、熱疲勞及潛變等行為之依據。本研究同時對於CFX軟體內的紊 流模式做了探討,俾日後進行更進一步的研究。研究結果可看出在停滯點,由於速度為零, 故此點壓力最大,而在吸入側,由於速度較快,此處壓力較低。 |
英文摘要 | Due to the lack of reserved capacity and demand of environmental protection, gas turbine (G.T.) units have increased significantly in TPC and the role of G.T. has shifted from reserved-load unit to peak-load unit. Therefore, it's necessary to evaluate the material behaviors of G.T. blade under high temperature conditions. In this study, the turbine moving blade temperature distribution and velocity field are analyzed and the results are used as a reference for the further study of corrosion、fatigue and creep in turbine blade. The general purpose commercial code CFX is used in this study and the related turbulence models are discussed also. The results indicate that maximum pressure is located on the stagnation point owing to the zero speed. While in the suction side, the magnitude of pressure is lower than that of pressure side due to its higher velocity. |
本系統中英文摘要資訊取自各篇刊載內容。