Transient Convective Heat Transfer to a Turbulent Flow from a Flat Plate with Constant Heat Capacity : Experimental Study

Abstract

This paper presents an experimental study of transient turbulent heat transfer from a flat plate with a constant heat capacity. The flat plate which is set parallel to a uniform flow is initially at the same temperature as the flow, and the plate is heated stepwise with time. The responses of turbulent heat transfer on the plate were studied experimentally. Transient local wall temperature of the plate was measured using a vacuum deposited nickel thin film as a resistance thermometer. The relations between dimensionless wall temperature or Spalding function and dimensionless time are shown. Close agreement between measured and analytical results was obtained within the experimental errors.