An Experimental Study on the Effectiveness of an Adiabatic Flat Plate Covered with Cold Air Film

Abstract

Experimental results are presented on the effectiveness of an insulating film formed by cold air injected through a preceding porous section of a flat plate covered with a fully developed turbulent boundary-layer and are correlated with an empirical equation. Also, some considerations are made to clarify the difference in the effectiveness of the present partially porous air injection from that of the tangential slot air injection.