Numerical Simulation for Exhaust Manifold Based on the Serial Coupling of STAR-CCM+ and ABAQUS

摘要

This study aims to realize the serial coupling of STAR-CCM+6.04 and ABAQUS 6.11-1 and provide boundary conditions for the thermal fatigue analysis. To predict the thermal fatigue life of the internal combustion engine exhaust manifold effectively, the transient heat-transfer process between exhaust gases and exhaust manifolds should be reflected accurately. The transient fluid-solid-thermal coupling simulation on the exhaust manifold is carried out by using serial coupling method. The research of dealing with the problems of transient temperature loading, the mesh generating and the interface temperature interpolation of fluid and solid are conducted in the process of numerical simulation. The goal of bidirectional fluid and solid coupling simulation between the CFD software STAR-CCM+ and the FEA software ABAQUS is achieved and the transient temperature and thermal stress distribution are obtained. Comparison with the steady analysis results shows that it's a necessary and effective way of conducting transient analysis.