Heat transfer and flow in a shallow rectangular cavity with subsonic turbulent air flow

Abstract

Pressure coefficients, heat-transfer coefficients, and recovery factors have been measured on the surface of shallow cavities of rectangular form, with length to depth ratios of 2 to 5, for air flow over the cavity at speeds from 160 to 590 ft/s. The flow over the surfaces of the cavity is indicated to be two dimensional over a fraction of the cavity surface and, for this region, partial rationalization of the heat-transfer coefficient is achieved from the indication of temperature and mean speed profiles obtained at various points downstream of separation. The importance of the free shear layer across the top of the cavity is emphasized and a number of its features are shown to correspond to those of the free jet boundary.