Vol-7 Issue-5 2021 IJARIIE-ISSN(O)-2395-4396 15370 www.ijariie.com 534 Two wheeler silencer study and thermal analysis- A review Pankaj Ingle 1* , Mangesh Dharme 2 , Kapish Dhakulkar 3 1 ME Scholar, Department of Mechanical Engineering, Dr. Rajendra Gode Institute of Technology & Research, Amravati 1 , Maharashtra, India. 2 Associate Professor, Department of Mechanical Engineering, Dr. Rajendra Gode Institute of Technology & Research, Amravati 2 , Maharashtra, India. 3 Assistant Professor, Department of Mechanical Engineering, Dr. Rajendra Gode Institute of Technology & Research, Amravati 3 , Maharashtra, India. ABSTRACT Two wheeler silencers are used to silence the noise generated by engine while throwing out hot flue gases from the combustion chamber. The technique of silencing the noise is to pass flue gases through the silencer and reduce the flow speed. Hence the noise gets silenced. It also helps to discharge hot flue gases into atmosphere. Inside the silencer the flue gas allows to flow through different sections. During this flow the nature of flow needs to study well to understand the silencing phenomenon. CFD Analysis will help to learn this flow. Practically it is very critical to study flue gas flow inside the silencer. Hence CFD method is very popular and widely used in research and development of silencer. In this review paper, we have studied literature of two wheeler silencer. The temperature distribution, pressure variation, velocity gradient and the turbulence etc. are studied well to know the phenomenon of silencing the sound produced due to exhaust gases. Also the improvements in design can be suggested based on the CFD analysis. Keyword: - CFD Analysis1, Silencer2, Temperature Distribution3, Heat transfer4. 1. INTRODUCTION Vehicle’s exhaust system is designed to take care of toxic emissions automobiles produces. It will direct harmful hydrocarbons away from the driver and passengers, and reduce the air pollutants automobiles releases into the environment, helping keep the air clean. An additional benefit is that the exhaust system significantly reduces the amount of noise automobiles produce. An exhaust system in working order will keep automobiles sounding pleasant as it runs and will reduce noxious gases. In most motorcycles all or most of the exhaust system is visible and may be chrome plated as a display feature. Aftermarket exhausts may be made from steel, aluminium, titanium, or carbon fiber. Fig-1 Two wheeler silencer or Muffler Motorcycle exhaust system also known as muffler is made to route exhaust gases away from the engine. As fuel burn inside the engine gases and fumes are produced, so this gases and fumes need to be taken out from the engine. The exhaust system does the work. The muffler also captures some of the harmful toxins in the gases before they are