Volume 36 Issue 1
Jan.  2010
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Jiang Lijun, Gao Ge, Zhang Changxianet al. Numerical simulation of a swept backward-facing step flow[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(1): 87-90. (in Chinese)
Citation: Jiang Lijun, Gao Ge, Zhang Changxianet al. Numerical simulation of a swept backward-facing step flow[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(1): 87-90. (in Chinese)

Numerical simulation of a swept backward-facing step flow

  • Received Date: 19 Dec 2008
  • Publish Date: 31 Jan 2010
  • 3-dimensional separated and reattaching flow over a swept backwark-facing step of height h at Re=28000 with turbulent upstream conditions was studied for sweep angles up to Λ = 60° using open field operation and manipulation (OpenFOAM). This new open source software was validated by comparison with experimental data, special attention is focus on the 0° condition. Velocity profile, vortex structure, and pressure distribution were released. The results show that the reattachment length and vortex structure vary with the swept angles from Λ =0° to 60°. Generally the reattachment length and spanwise vorticity decrease dramatically after Λ =30°. Object-orientation techniques and the open source computational fluid dynamics(CFD) package named OpenFOAM are also introduced.

     

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