UNSTEADY FORCED-CONVECTION HEAT-TRANSFER FROM A TRANSLATING AND SPINNING BODY

The initial laminar thermal boundary-layer flow past an impulsively st arted translating and spinning rotational symmetric body of uniform te mperature is investigated. Velocity components and temperature are exp anded in series in powers of time. Lending and first-order functions a re obtained analytically, second and third-order functions are determi ned numerically. Application of the general results to a sphere shows that the surface heat flux is reduced in the neighborhood of the point of separation and enhanced by the reversed flow inside the separated region.