In-cylinder airflow of automotive engine by quasi-direct numerical simulation |
| |
| Institution: | 1. School of Engineering, Mechanical and Manufacturing Engineering Department, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;2. School of Mechanical Engineering, Tsinghua University, Beijing 100084, China;1. Immobilisation Science Laboratory, Department of Materials Science and Engineering, The University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK;2. Faculty of Science, Technology and Human Development, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia;1. U.S. Geological Survey, 3215 Marine Street, Suite E127, Boulder, CO, 80303, USA;2. U.S. Geological Survey, PO Box 25046, Mail Stop 973, Denver Federal Center, Denver, CO, 80225, USA;3. U.S. Geological Survey, 2329 W Orton Circle, West Valley City, UT, 84119, USA;4. U.S. Geological Survey, Mail Stop 415, Denver Federal Center, Denver, CO, 80225, USA;1. Clean Combustion Research Center (CCRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia;2. Transport Technologies Division, R&DC, Saudi Aramco, Dhahran, Saudi Arabia |
| |
| Abstract: | A Computational Fluid Dynamics (CFD) program for in-cylinder airflow analysis has been developed by the authors. The feature of the developed program is that it treats turbulence flow with the quasi-direct numerical simulation (Quasi-DNS). So it is possible to present transient turbulence eddy motions in detail. For fast and high quality mesh generation, the Voxel method was employed. The computational domain is discretized by uniform cubic cells in this method. The simulation results were verified by two benchmark tests. One of them in common use is a backward step flow test, the other is an in-cylinder flow test that supposed the engine induction stroke. Good agreement was obtained between the simulation and the experimental results of these benchmark tests. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
