대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제27권12호
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  • Pages.1681-1690
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  • 2003
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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표면 거칠기 효과를 고려한 2-방정식 난류 모델의 성능평가

Evaluation of Two-Equation Turbulence Models with Surface Roughness Effect

  • 윤준용 (한양대학교 기계공학과) ;
  • 천정민 (한양대학교 대학원 기계공학과) ;
  • 강승규 (한양대학교 대학원 기계공학과) ;
  • 변성준 (한양대학교 대학원 기계공학과)
  • 발행 : 2003.12.01
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초록

The effect of roughness is a change in the velocity and turbulence distributions near the surface. Turbulence models with surface roughness effect are applied to the fully developed flow in a two-dimensional, rough wall channel. Modified wall function model, low-Reynolds number k-$\varepsilon$ model, and k-$\omega$ model are selected for comparison. In order to make a fair comparison, the calculation results are compared with the experimental data. The modified wall function model and the low-Reynolds number k-$\varepsilon$ model require further refinement, while the k-$\omega$ model of Wilcox performs remarkably well over a wide range of roughness values.

키워드

참고문헌

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피인용 문헌

  1. Numerical Analysis of Thermal and Flow affected by the variation of rib interval and Pressure drop Characteristics vol.35, pp.5, 2011, https://doi.org/10.5916/jkosme.2011.35.5.616