Impingement of a Radial Jet with an Annular Jet : Deflection Properties of Main Jet Flow

Abstract

This paper presents the results of an experimental study on the deflection and reattachment of a radial turbulent jet (main jet) discharged from a cylindrical nozzle onto an adjacent disk plate in the presence of a lateral control flow from an annular nozzle. The main content of this report concerns the effects of various nozzle distances, control flow rates and control momentum fluxes on the deflection properties of the main jet in the region near the nozzle exit. The relationship between the deflection angle of the main jet, the control flow rate and the control momentum flux was clarified. The changes of the maximum jet velocity, the turbulence intensities at the velocity maxima and the jet half-width along the deflected distance measured from the virtual origin of the jet were obtained for various experimental conditions.