DESIGN VALIDATION OF THE EXISTING MUFFLER’S TRANSMISSION LOSS RESULTS WITH ACOUSTIC SIMULATION TOOL

Abstract

Muffler is an important noise control setup for reduction of machinery exhaust noise. Mufflers are typically arranged along the exhaust pipe as the part of the exhaust system of an internal combustion engine to reduce its noise. Noise from an automotive application is the major source of noise pollution. Researcher Abdullah A. Dhaiban et.al. suggested that a three-dimensional finite element analysis has been implemented to predict the transmission loss of an elliptic expansion chamber muffler for a given frequency range. Finite element models have been established by ANSYS 12.0.1 [1]. Results obtained from the model were compared with both experimental data obtained from previous work. Further this research work is implemented by Comsol tool which shows the capability of simulation tool for the acoustical transmission loss measurement. The main aim of this paper is to design validation of the existing muffler transmission loss results with Comsol acoustic module.