3D CFD based optimization technique for muffler design of a motorcycle

Shadman, Sakib; Abir, Oneeruddho Hussain

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dc.contributor.author	Shadman, Sakib
dc.contributor.author	Abir, Oneeruddho Hussain
dc.date.accessioned	2021-01-09T03:11:57Z
dc.date.available	2021-01-09T03:11:57Z
dc.date.issued	2015-11-15
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dc.identifier.uri	http://hdl.handle.net/123456789/783
dc.description	Supervised by Dr. Mohammad Ahsan Habib Assistant Professor, Department of Mechanical and Chemical Engineering (MCE), Islamic University of Technology (IUT)	en_US
dc.description.abstract	In order to minimize the sound transmission due to exhaust gases, the most common and important part of the engine system is muffler. A back pressure on engine is always produced due to the use of the exhaust muffler. This back pressure represents the extra static pressure exerted by the muffler on the engine through the restriction in flow of exhaust gases. The back pressure mainly depends on the internal shape and overall design of the exhaust muffler. Design of muffler is a complex function that affects noise characteristics, emission and fuel efficiency of engine. In this study, a combined model of response surface methodology (RSM) and desirability analysis is used for optimizing the back pressure of a motorcycle reactive muffler, in order to improve the performance of the muffler. For this optimization process, the design variable parameters are size of perforation, number of perforation and partition chamber size. To measure the back pressure 3D CFD based CAE software has been used. Prediction of acoustics transmission loss virtually is an important analysis required for the development of muffler at an initial design stage. For this reason, for the optimized design virtual acoustics transmission loss analysis is conducted. It is found that after optimizing the design of the muffler, the back pressure is decreased and the acoustic transmission loss is increased that can ensure the improvement of the muffler efficiency.	en_US
dc.language.iso	en	en_US
dc.publisher	Department of Mechanical and Production Engineering, Islamic University of Technology, Gazipur, Bangladesh	en_US
dc.title	3D CFD based optimization technique for muffler design of a motorcycle	en_US
dc.type	Thesis	en_US