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- W105781869 abstract "Shape optimization on mufflers within a limited space is essential for industry where the equipment layout is occasionally tight and the available space for a muffler is limited for maintenance and operation purposes. To proficiently enhance the acoustical performance within a constrained space, the selection of an appropriate acoustical mechanism and optimizer becomes crucial. A one-chamber muffler hybridized with reverse-flow ducts which can visibly increase the acoustical performance is rarely addressed; therefore, the main purpose of this paper is to numerically analyze and maximize the acoustical performance of this muffler within a limited space. In this paper, the four-pole system matrix for evaluating the acoustic performance ― sound transmission loss (STL) ― is derived by using a decoupled numerical method. Moreover, a genetic algorithm (GA), a robust scheme used to search for the global optimum by imitating the genetic evolutionary process, has been used during the optimization process. Before dealing with a broadband noise, the STL’s maximization with respect to a one-tone noise is introduced for a reliability check on the GA method. Moreover, the accuracy check of the mathematical model is performed. The optimal result in eliminating broadband noise reveals that the one-chamber muffler with reverse-flow perforated ducts is excellent for noise reduction. Consequently, the approach used for the optimal design of the noise elimination proposed in this study is easy and effective" @default.
- W105781869 created "2016-06-24" @default.
- W105781869 creator A5021768517 @default.
- W105781869 date "2010-02-15" @default.
- W105781869 modified "2023-10-06" @default.
- W105781869 title "SHAPE OPTIMIZATION OF ONE-CHAMBER MUFFLERS WITH REVERSE-FLOW DUCTS USING A GENETIC ALGORITHM" @default.
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- W105781869 doi "https://doi.org/10.51400/2709-6998.1860" @default.
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