Noise reduction of spiral ducts. |
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| Authors: | Wojciech Lapka Czes?aw Cempel |
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| Institution: | Institute of Applied Mechanics, Poznań University of Technology, Poznań, Poland. wlapka@poczta.onet.pl |
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| Abstract: | The paper presents noise reduction (NR) of spiral ducts as a result of computational modeling of acoustic wave propagation. Three-dimensional models were created with the finite element method in COMSOL Multiphysics version 3.3. Nine models of spiral ducts with 1-9 spiral leads were considered. Time-harmonic analysis was used to predict NR, which was shown in spectral and interval frequency bands. Spiral duct performance can be seen as a comparison of NR before and after a change from a circular to a spiral duct. |
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