4800 - An Experimental Study of Convective Heat Transfer on a Body Disturbed by Local Airflow—Part 2: Stimulation Structure of Local Airflow Through Natural Convection

To stimulate a thermal or contact receptor on a body surface, a local airflow must pass through the natural convection that rises around a body from its own metabolic heat.The effect of local airflows on local convective heat transfer was statistically examined using thermal manikin experimental results. The effect of the local airflows was evaluated from the changes in the natural convection boundary layer temperature and the changes in the body surface heat fluxes. The effects of nozzle surface velocities and arrival velocities after traveling the distance between the nozzle and a body surface were compared. Though the boundary layer temperature changes differed irregularly between the back of the neck and ankle, the surface heat flux changes were significantly larger at the ankle than at the back of the neck. The results indicated that the local airflows affected the ankle more strongly than the neck.