Application of flow field simulation technique to the study of exhaust noise of car

A new method is developed to solve the exhaust noise problem. Aiming at studying on the exhaust noise of car, firstly initial analysis is made on the flow field of exhaust muffler of car by Computational Fluid Dynamics (CFD) software Fluent in this paper. Then structure optimization solution is brought forward and simulation analysis is made on the solution. The CFD method and experimental results show good agreement through test, which proves that the optimization solution is effective. The noise level of the end of exhaust muffler is decreased. Thus it improves the overall acoustic performance.