한국전산유체공학회:학술대회논문집

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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Parallel Finite Element Analysis of the Drag of a Car under Road Condition

  • Choi H. G. (Department of Mechanical Engineering, Seoul National University of Technology) ;
  • Kim B. J. (Graduate school of Aerospace and Mechanical Engineering, Seoul National University) ;
  • Kim S. W. (Graduate school of Aerospace and Mechanical Engineering, Seoul National University) ;
  • Yoo J. Y. (School of Aerospace and Mechanical Engineering, Seoul National University)
  • Published : 2003.10.01
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Abstract

A parallelized FEM code based on domain decomposition method has been recently developed for a large scale computational fluid dynamics. A 4-step splitting finite element algorithm is adopted for unsteady computation of the incompressible Navier-Stokes equation, and Smagorinsky LES(Large Eddy Simulation) model is chosen for turbulent flow computation. Both METIS and MPI library are used for domain partitioning and data communication between processors respectively. Tiburon of Hyundai-motor is chosen as the computational model at $Re=7.5{\times}10^{5}$, which is based on the car height. It is confirmed that the drag under road condition is smaller than that of wind tunnel condition.

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