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Optimal Design of a Muffler with Perforated Plates Considering Pressure Drop

압력 강하를 고려한 머플러 천공판 최적설계

  • Received : 2013.02.15
  • Accepted : 2013.03.27
  • Published : 2013.04.20

Abstract

An acoustical shape optimization problem is formulated for optimal design of a perforated reactive muffler with offset inlet/outlet. The mean transmission loss value in a target frequency range is maximized for an allowed pressure drop value between an inlet and an outlet. Partitions in the chamber are divided into several sub-partitions, whose lengths are selected as design variables. Each sub-partition has the same number of holes, whose sizes are equal. A finite element model is employed for acoustical and flow analyses. A gradient-based optimization algorithm is used to obtain an optimal muffler. The acoustical and fluidic characteristics of the optimal muffler are compared with those of a reference muffler. Validation experiment is carried out to support the effectiveness of our suggested method.

Keywords

Acknowledgement

Supported by : 한국연구재단

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