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

  • 제25권1호
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  • Pages.87-95
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  • 2001
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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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국소교란에 의한 박리 재부착 유동에서의 난류 열전달 수치해석

Numerical Simulation of Turbulent Heat Transfer in Locally-Forced Separated and Reattaching Flow

  • 발행 : 2001.01.01
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초록

A numerical study was made of heat transfer in locally-forced turbulent separated and reattaching flow over a backward-facing step. The local forcing was given to the flow by means of sinusoidally oscillating jet from a separation line. A Rhee and Sung version of the unsteady $\kappa$-$\varepsilon$-f(sub)u model and the diffusivity tensor heat transfer model were employed. The Reynolds number was fixed at Re(sub)H=33,000 and the forcing frequency was varied in the range 0$\leq$fH/U(sub)$\infty$$\leq$2. The condition of constant heat flux was imposed at the bottom wall. The predicted results were compared and validated with the experimental data of Chun and Sung and Vogel and Eaton. The enhancement of heat transfer in turbulent separated and reattaching flow by local forcing was evaluated and analyzed.

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참고문헌

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