Application and comparison of different turbulent models with computations of in-cylinder turbulent flows in ICE

Different turbulent models are applied to predict the in-cylinder flows in internal combustion engines. An assessment of k-ε, RNG k-ε, LRR and SSG is made by comparing them with experiment data of a 90 degree bend with square-crossing section . The result shows that the SSG is the best in the four turbulent models. An elliptic equation is used to generate the boundary-fitted ICE mesh. The calculation result shows that DSM models, especially SSG models, could better describe the non-isotropic characteristics of the in-cylinder turbulent flows in internal combustion engine.