THE EFFECT OF THE THERMAL-PROPERTIES OF A BODY BEING FLOWN ABOUT ON FRICTION AND HEAT-TRANSFER UNDER CONDITIONS OF LOCAL HEAT INPUT TO A TURBULENT BOUNDARY-LAYER

A solution is given of a conjugate boundary-value problem that describ es a turbulent flow past a flat plate of finite thickness with a heate d portion, with due regard for the processes of heat transfer inside t he plate. As compared with a non-heat-conducting plate, the inclusion of the heat capacity and thermal conductivity of its material leads to an appreciable decrease of the temperature of the surface being flown about, as well as to a decrease of the local friction coefficient imm ediately behind the heated portion, where the heat flux is directed aw ay from the gas toward the plate surface. It is shown that, in the abs ence of significant leakage of heat from the heated portion via heat i nsulation to the remaining part of the plate, the integral decrease of turbulent friction due to local heat input to a supersonic turbulent boundary layer is approximately the same both for a heat-conducting pl ate and for an adiabatic plate.