Wind and Structures

테크노프레스 (Techno-Press)
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Large eddy simulation using a curvilinear coordinate system for the flow around a square cylinder

  • 발행 : 2002.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

The application of Large Eddy Simulation (LES) in a curvilinear coordinate system to the flow around a square cylinder is presented. In order to obtain sufficient resolution near the side of the cylinder, we use an O-type grid. Even with a curvilinear coordinate system, it is difficult to avoid the numerical oscillation arising in high-Reynolds-number flows past a bluff body, without using an extremely fine grid used. An upwind scheme has the effect of removing the numerical oscillations, but, it is accompanied by numerical dissipation that is a kind of an additional sub-grid scale effect. Firstly, we investigate the effect of numerical dissipation on the computational results in a case where turbulent dissipation is removed in order to clarify the differences between the effect of numerical dissipation. Next, the applicability and the limitations of the present method, which combine the dynamic SGS model with acceptable numerical dissipation, are discussed.

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참고문헌

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피인용 문헌

  1. APPLICATION AND DEVELOPMENT OF LES TO THE PROBLEM OF THE VORTEX INDUCED OSCILLATION OF HIGHRISE RC TOWER vol.70, pp.592, 2005, https://doi.org/10.3130/aijs.70.35_3
  2. LES analysis of unsteady characteristics of conical vortex on a flat roof vol.96, pp.10-11, 2008, https://doi.org/10.1016/j.jweia.2008.02.021
  3. Large-eddy simulations of flow past a square cylinder using structured and unstructured grids vol.137, 2016, https://doi.org/10.1016/j.compfluid.2016.07.013
  4. LES ANALYSIS FOR A CONICAL VORTEX AND UNSTEADY PRESSURE CHARACTERISTICS ON A FLAT ROOF vol.72, pp.621, 2007, https://doi.org/10.3130/aijs.72.9_6
  5. Large eddy simulation of turbulent flows around bluff bodies in overlaid grid systems vol.96, pp.10-11, 2008, https://doi.org/10.1016/j.jweia.2008.02.065
  6. LES ANALYSIS OF TURBULENCE EFFECTS ON AEROELASTIC INSTABILITY OF PRISMS vol.68, pp.563, 2003, https://doi.org/10.3130/aijs.68.67_1
  7. Shear effects on flows past a square cylinder with rounded corners at Re=2.2×10 4 vol.174, 2018, https://doi.org/10.1016/j.jweia.2017.12.025
  8. LES ANALYSIS OF THE VORTEX INDUCED OSCILLATION OF TWO DIMENSIONAL CIRCULAR CYLINDER IN HOMOGENEOUS TURBULENT FLOW vol.68, pp.569, 2003, https://doi.org/10.3130/aijs.68.23_3
  9. LES analysis on aeroelastic instability of prisms in turbulent flow vol.91, pp.12, 2002, https://doi.org/10.1016/j.jweia.2003.09.032
  10. LES ANALYSIS OF VORTEX INDUCED OSCILLATION OF A THREE DIMENTIONAL CIRCULAR CYLINDER : Change of vortex formation for free end and the effects of rocking oscillation mode vol.69, pp.581, 2002, https://doi.org/10.3130/aijs.69.7_5
  11. LES ANALYSIS FOR MAXIMUM NEGATIVE PRESSURE ON AN ELLIPTIC STRUCTURE vol.75, pp.652, 2010, https://doi.org/10.3130/aijs.75.1081
  12. LES OF LOCAL SEVERE SUCTION ON SIDE FACE OF A THREE-DIMENSIONAL SQUARE CYLINDER vol.78, pp.694, 2002, https://doi.org/10.3130/aijs.78.2065
  13. Investigation approaches to quantify wind-induced load and response of tall buildings: A review vol.62, pp.None, 2002, https://doi.org/10.1016/j.scs.2020.102376