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Design Analysis and Performance Evaluation of Reactive Silencer by SYSNOISE

Mrs.Varsha Chitale-Patil, Mr.Amol R.Patil, Prof.R.B.Patil

Noise pollution created by engines becomes a vital concern when concern used in residential areas or area where noise creates hazard. Issues concerning the design and use of large-scale silencers are more prevalent today than ever before. The main sources of noise in an engine are the exhaust noise and the noise produced due to friction of various parts of the engine. The exhaust noise is the most dominant. With the increased use of large industrial machinery and the increase in public awareness and concern for noise control, the desire to be able to able to properly design silencer for specific application is increasing. Due to the size and expense of silencers, it would be beneficial to have means to predict the insertion loss (IL) or transmission loss (TL) characteristics at the design stage. To properly accomplish this, many factors such as geometry, flow effects, break out noise, and self generated noise must be considered. There are a number of methods currently used to model and investigates the acoustic performance (TL) of mufflers including analytical methods such as the TMM, computational methods including the use of FEM & BEM & experimental measurement techniques .The use of finite element method (FEM) & the boundary element method (BEM) can aid in the prediction & design.