Research on numerical simulation of vehicle muffler structure based on computational fluid dynamics

Based on computational fluid dynamics method, using standard turbulence model of fluid software and couple algorithm to solve. Using this modeling and solving algorithm, the number and position arrangement changes of baffles are studied under the same speed and temperature conditions, and combined with the analysis of the pressure cloud diagram, velocity distribution diagram, noise power cloud diagram and turbulence kinetic energy diagram inside the muffler, discuss vehicle muffler air Dynamic and acoustic performance impact. Through the research in this article, the CFD method has a good performance in dealing with the pressure loss of the muffler, which provides a theoretical basis for reducing fuel consumption and improving power performance.