Heat transfer in a wall jet propagating in a highly turbulent cocurrent flow

Heat transfer in a jet propagating in a cocurrent flow has been studied over wide ranges of the injection ratio (m=Us/U0<1 and m>1) and flow turbulence (Tu0=0.2–25%). It is shown experimentally that for m<1, a 1% increase in turbulence leads to a 1% increase in heat transfer, and the wall adiabatic temperature and the relative heat-transfer function should be taken into account in heat-transfer calculations. For m>1, the flow turbulence does not affect the heat transfer and the heat production can be calculated using the laws typical of jet flows.