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

- Journal title : Transactions of the Korean Society of Mechanical Engineers B
- Volume 25, Issue 1, 2001, pp.87-95
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-B.2001.25.1.87

Title & Authors

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

Ri, Gwang-Hun; Seong, Hyeong-Jin;

Ri, Gwang-Hun; Seong, Hyeong-Jin;

Abstract

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 --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 0fH/U(sub)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.

Keywords

Low-Reynolds-Number Model;Separated and Reattaching Flow;Turbulent Heat Transfer;

Language

Korean

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