Measurements of drop size on a plain-jet airblast atomizer
Abstract
Results are presented for an experimental study of a plain-jet airblast atomizer, using a specially designed system in which all the relevant parameters - i.e., liquid properties, liquid/air ratio, air velocity, and atomizer dimensions - could be varied independently and examined for their separate effects on spray quality. The plain-jet type of airblast atomizer is such that the fuel is not transformed into a thin sheet but instead is injected into the high-velocity airstream in the form of discrete jets. Major conclusions are that the mean drop size of the liquid spray increases with increase in liquid viscosity and surface tension and decreases with increase in liquid density, and that atomization quality is improved by an increase in air velocity and air/liquid ratio and by a reduction in liquid flow rate. Under comparable operating conditions the performance of the plain-jet airblast atomizer is inferior to that of the thin-sheet type.
- Publication:
-
American Institute of Aeronautics and Astronautics and Society of Automotive Engineers
- Pub Date:
- July 1976
- Bibcode:
- 1976auep.conf.....L
- Keywords:
-
- Aerial Explosions;
- Air Flow;
- Atomizers;
- Drop Size;
- Flow Velocity;
- Two Dimensional Jets;
- Drops (Liquids);
- Fuel Injection;
- Gas Turbines;
- Light Scattering Meters;
- Mass Flow Rate;
- Surface Reactions;
- Viscosity;
- Fluid Mechanics and Heat Transfer