Abstract
The paper presents a detailed experimental investigation of all aspects of the swirl type atomization to determine the atomization quality for a wide range of atomizer geometry and operating pressures. This includes the investigation of the effect of pressure drop across the atomizer (injection and medium pressures), length/diameter ratio of the swirl chamber, length/diameter ratio of the orifice, and the ori-fice diameter upon the spray cone angle, the rate of discharge, the droplet size distribution and the mean drop size. The slide sampling technique is used for the determi-nation of the droplet size. Experimental results are depicted in diagrams relating the atomization quality with the atomizer geometry and operating conditions. The dependence of the mean droplet diameter, the rate of discharge and the spray cone angle on the pressure drop across the atomizer and the atomizer geometry are summarized by three useful empirical equations. These correlation equations are suitable to predict the geometry of the atomizer and the operating conditions to satisfy a specified liquid atomization quality.
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