A numerical study was made of heat transfer in locally forced turbulent sep
arated and reattaching flow over a backward-facing step. The local forcing
was given to the flow by means of a sinusoidally oscillating jet from a sep
aration line. The Rhee and Sung version of the unsteady k - epsilon --f(mu)
model and the diffusivity tensor heat transfer model were employed. The Re
ynolds number was fixed at Re-H = 33,000 and the forcing frequency was vari
ed in the range 0 less than or equal to fH / U-infinity less than or equal
to 2. The condition of constant heat flux was imposed at the bottom wall. T
he 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.