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Effects of Diesel Nozzle Geometry on Internal Cavitating Flow

Qian Wang

Abstract

The numerical simulation of cavitating flow developed fully in nozzle holes of a vertical multi-hole injector with mixture multi-phase cavitating flow model was carried out.And then the effects of sac geometry,turning angle of the orifice and hole inclination angle on the cavitating flow in nozzle holes were studied.It is finally concluded that the performance of IMPROVED nozzle is better than that of the STD nozzle and the VCO nozzle and small inlet turning angle of the orifice can enhance the atomization of the spray.

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Available abstract

Key concepts: Nozzle, Body orifice, Cavitation, Injector, Discharge coefficient, Spray characteristics, Mechanics, Inlet