Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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EVALUATION ON TURBULENT MODEL IN LARGE EDDY SIMULATION OF TUHANNEL FLOW AROUND A WALL-MOUNTED CUBE IN A CHANNEL

채널 내 부착된 입방체 장애물 주위 유동에 관한 LES 난류모델의 영향 평가

  • 박남섭 (유한대학 기계공학과) ;
  • 고상철 (전주대학교 기계자동차공학과)
  • Published : 2008.09.30
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Abstract

In engineering application of large eddy simulation, there are still questions as follows grid dependency on numerical results, the effect of upwind scheme against a calculation instability, appropriate boundary conditions dealing with turbulence fluctuation and the performance of SGS models. In this study, in order to develop the LES to the engineering application, large eddy simulation was carried out to investigate the effect of upwind scheme, turbulent subgrid model and the grid dependancy of the flow around a wall-mounted cube in a channel at Re=40,000 based on cubic height and bulk mean velocity. The computed velocities, turbulence quantities, separation and reattachment length were evaluated compared with the experimental results of R. Matinuzzi and C. Tropea.

Keywords

References

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