PERFORMANCE EVALUATION OF SILENCER BY SYSNOISE

mechanical engineering

Internal combustion engine is a main source of noise pollution. These engines are used for various purposes such as, in power plants, automobiles, locomotives, and in various manufacturing machineries. Noise level of more than 80 dB is injurious for human being. 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 to reduce this noise, various kinds of silencer are usually used. The level of exhaust noise reduction depends upon the construction and the working procedure of silencer. For the present study is to investigate acoustic behavior of reactive silencer by FEM and BEM. First, the acoustic performance of simple and concentric resonator chamber is explored with FEA. Computational results obtained are compared with the experimental results available in the literature. Once these result shows good agreement with each other then this finite element analysis procedure can be used for performance analysis of silencer with perforated tubes and baffles.

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