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In-Cylinder Airflow of Automobile Engine By Quasi-Numerical Direct Simulation
Published July 23, 2002 by Society of Automotive Engineers of Japan in Japan
Event: 2002 JSAE Annual Congress
A Computational Fluid Dynamics (CFD) program for in-cylinder airflow analysis has been developed by the authors. The feature of the developed simulation program is that it treats turbulence flow with quasi-direct numerical simulation (Qusi-DNS). So it's possible to present transient turbulence eddies in detail. And for fast and high-quality mesh generation, the VOXEL method was used. The computational domain has been discretized by uniform cubic cells. The simulation results have been verified by two benchmark problems. One of them is common used a backward step flow. And the other is in-cylinder flow that supposed engine aspiration stroke. Good agreements have been obtained between the simulation and the experimental results of these benchmark problems.