Jet Emerging from a Nozzle and Impinging on a Conical Cavity: Influence of Nozzle and Cavity Geometric Configurations

Abstract

A jet emerging from a nozzle with different cone angles and impinging onto a conical cavity with different depths and diameters is considered. The flow simulation is extended to include a jet emerging from a pipe and impinging onto the cavity for the comparison. The Reynolds stress turbulence model is incorporated to account for the turbulence. The control volume approach is used to discretize the governing equations of flow and heat transfer. It is found that the flow structure above the cavity differs significantly due to radial expansion of the flow emerging from the nozzle. This modifies the flow structure in the cavity, particularly for a large diameter. The influence of the nozzle cone angle on the heat transfer coefficient and the shear stress along the cavity wall is more pronounced for a large diameter cavity.