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題 名 | 入出口為漸變型消音器之性能分析=An Efficient Analysis for the Input/Output Area Change's Mufflers |
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作 者 | 王昭男; 吳建和; | 書刊名 | 中華民國音響學刊 |
卷 期 | 12 2007.11[民96.11] |
頁 次 | 頁1-16 |
分類號 | 447.1187 |
關鍵詞 | 消音器; 聲波; 傳輸損失; Mufflers; Acoustic; Transmission loss; |
語 文 | 中文(Chinese) |
中文摘要 | 本文由平面波理論建立直管及延伸館的傳輸矩陣,進而據以分析消音器之性能,並與以往的單膨脹管與延伸管型消音器資料作一比較,驗證其正確性。接著將傳輸矩陣擴展至入出口為漸變型的單膨脹管及延伸管型消音器之傳輸損失性能分析。發現若將入口及出口漸變段部分的角度增加,則其傳輸損失效果較佳;在漸變型延伸管中,若入口延伸的長度小於漸變段的長度時,在低頻區之傳輸矩陣明顯較入口延伸管長度大於等於漸變段時為佳。 |
英文摘要 | In this study the transfer matrix for uniform tube and extended tube based upon the plane wave propagation theoery are established firstly. Then the transmission loss of simple expansion chamber and extended tube muffler are evaluated and compared with the anterior study. The agreement is goog. It shows that the present method is reliable. Then the transfer matrix was applied to the single expansion and the extended mufflers with cross section area gradual changed at the inlet/oulet. The numerical results of transmission loss show that the performance is better when the muffler with larger angle at input and output is used. Further, when the length of the extended tube of area change mufflers is extended less than area change segment, the transmission loss in low frequency range is better than that of the extended input's length is greater than or equal to area change segment. |
本系統中英文摘要資訊取自各篇刊載內容。