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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/72431

    Title: 壓縮機消音罩之進階分析與優化設計;Advanced Analysis and Optimized Design of the Muffler in a Compressor
    Authors: 彭俊瑋;Peng,Chun-Wei
    Contributors: 機械工程學系
    Keywords: 消音罩;噪音衰減;傳遞損失;ANSYS;Muffler;Noise reduction;Transmission loss;ANSYS
    Date: 2016-08-12
    Issue Date: 2016-10-13 14:55:24 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本文主要分析迴轉式壓縮機之消音罩的消音特性,其數值模型利用聲學模組ANSYS Acoustic ACTx R15.0進行聲場分析。其目的在建立一套有限元素分析方式應用於壓縮機消音罩之研發,並提供消音罩改善設計的方向,使設計者在事前可對消音罩進行消音分析與研究。
    ;This research focused on the noise reduction characteristics of the muffler in a rotary compressor. A finite element software, ANSYS Acoustic ACTx R15.0, was used to obtain the mathematical solutions. This research was split up into two sections. At the beginning, the muffler was connected to waveguides with anechoic outputs in the simulation model. The introduction of waveguides is to guarantee the existence of plane sound wave in the calculation of Transmission Loss (TL). The acoustic medium is air. Then, an experiment was performed. The numerical results and experimental results compare well if the output boundary of waveguides was chosen the open boundary. The second part of the research is the study of a real muffler without waveguides. The acoustic medium R22a. Another index, Noise Reduction (NR), was adopted to assess the noise reduction performance. A parameter study of various geometric parameters was reported. Design suggestions of the muffle were also given.
    Appears in Collections:[機械工程研究所] 博碩士論文

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