Impingement Cooling Characteristics of a Cube in Cross Flow

Abstract

An experimental and numerical investigation is carried out for the heat transfer froma cube faces subjected to impinging jet which centrally strikes the top face of the cube. Thecube is subjected also to a comparatively low velocity cross flow through the duct occupyingthe cube. Different factors affecting the cooling characteristics of the cube are studied asorifice size, jet velocity and orifice to cube top distance. The results show that cross flowincreases heat rates from the cube for small size orifices and low impinging jet velocities.Orifice sizes equal or bigger than cube size will isolate the cube from cross flow effectespecially at high impinging jet velocities.