Study on secondary atomization of liquid fuel at the lip of the flameholder
Abstract
An experimental investigation of secondary atomization of liquid fuel at the lip of the flameholder has been completed by means of the Malvern Particle-Sizer. This secondary atomization has several features: fine droplets occur in the high speed air flow side, while gross droplets occur in the recirculation zone side; the velocity of air flow has a predominant influence on the mean drop size of the spray which may be expressed quantitatively. The mechanism of the secondary atomization may be described as follows: some of the liquid drops in the spray are gathered by the flameholder and form a fuel film in its surface, the air flow forces the wavy film to move forward to the lip of the flameholder, and the fuel film breaks up at flameholder lip under a pincer attack of high speed turbulent flow and low speed recirculation flow.
- Publication:
-
Journal of Aerospace Power
- Pub Date:
- January 1992
- Bibcode:
- 1992JAerP...7...61Y
- Keywords:
-
- Atomizing;
- Flame Holders;
- Fuel Sprays;
- Liquid Fuels;
- Air Flow;
- Drops (Liquids);
- Flow Velocity;
- Recirculative Fluid Flow;
- Turbulent Flow;
- Fluid Mechanics and Heat Transfer