The Fluid-solid-Interaction Analysis of Mufflers in Exhaust System

• Main Authors: Chong-Hao Chen, 陳崇豪
• Other Authors: 許華倚
• Format: Others
• Online Access: http://ndltd.ncl.edu.tw/handle/m6by8q

碩士 === 國立臺北科技大學 === 機電整合研究所 === 103 === The main objective of this work is analyze the stress and deformation by the gas flowing through the car’s exhausting system, and changing inlet velocity of the muffer to stress and deformation interaction. We use the Fluent tool to simulate the exhausting system and the flow field of the muffler. By calculating Navier-Stokes equations to solve this three-dimensional incompressible steady flow. This is described as the RANS state of turbulence model. The Standard k-ε model is applied to solve this turbulent flow. Solving Methods by SIMPLE rule. First step is create geometry of the flow field inside the muffler by SolidWorks, then import the geometry into CFD. Meshing the geometry and set up boundary conditions, solution method. The final numerical results the results to the muffler shell, analyze the impact of the flow field of its shell. From the results ,the pipe of muffer increase hole can effectively reduce the stress and deformation.