抄録
Unsteady heat transfer to air is observable by measuring fluctuating temperatures on a heated surface having a low heat capacity. In this work, the time-spatial characteristics in the heat transfer on the wall of a turbulent boundary layer were investigated using an infrared thermograph having a frame rate of 120 per second. A titanium-foil of 2 pm thick was employed as the heated surface. The attenuation of the heat transfer coefficient in both space and time was reconstructed using a series of measured temperatures by solving the heat conduction equation.
