Abstract
The effect of geometrical parameters on the flow field and heat transfer at jet impingement cooling of an obstacle in the form of a spherical cavity, whose edge conjugates with a flat wall, is analyzed on the basis of experimental data. It is shown that the flow around cavity is accompanied by formation of large-scale vortices in depression, nonstationary separation of the flow at the outlet, and low heat transfer. The structure of the flow field and heat transfer intensity can be changed by variation of geometrical parameters.
