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

  • 제22권3호
  • /
  • Pages.280-293
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  • 1998
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  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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레이놀즈 응력모델을 이용한 압력구배가 있는 난류경계층의 유동장 해석

Numerical analysis of a turbulent boundary layer with pressure gradient using Reynolds-transport turbulence model

  • 발행 : 1998.03.01
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초록

Numerical study on turbulent and mean structures of a turbulent boundary layer with longitudinal and spanwise pressure gradient is carried out by using Reynolds-stress-model (RSM). The existence of pressure gradient in a turbulent boundary layer causes the skewing or divergence of rates of strain, which contributes to production of turbulent kinetic energy. Also, this augmentation of production due to extra rates of strain can increase the turbulent mixing and cause the anisotropy of turbulent intensities in the outer layer. This paper uses the Reynolds Stress Model to capture anisotropy of turbulent structures effectively and is devoted to compare the results computed by using RSM and the standard k-.epsilon. model with experimental data. It is concluded that the RSM can produce the more accurate predictions for capturing the anisotropy of turbulent structure than the standard k-.epsilon. model.

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참고문헌

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