Research on heat-solid coupled numerical simulation of engine exhaust pipe based on ANSYS

The temperature distribution on the exhaust pipe wall is uniform due to function of high temperature exhaust fumes and influence of its complex structure, and which causes high heat stress in some part body of the exhaust pipe. How to accurately simulate the heat stress distribution is an issue. In this paper, a new heat-solid coupled theory which can effectively resolve the interaction of boundary condition between fluid and solid is discussed, on the basic of which, numerical simulation of heat stress on the engine exhaust pipe is researched. The results indicate that the maximum stress is present to the guide baffle near the entrance of the exhaust pipe.