Aerodynamic-wave break-up of liquid sheets in swirling airflows and combustor modules
Abstract
Experimental mean drop diameter data were obtained for the atomization of liquid sheets injected axially downstream in high velocity swirling and nonswirling airflow. Conventional simplex pressure atomizing fuel nozzles and splash type fuel injectors were studied under simulated combustor inlet airflow conditions. A general empirical expression relating recirprocal mean drop diameter to airstream mass velocity was obtained and is presented. The finest degree of atomization, i.e., the highest value of the coefficient C, was obtained with swirl can combustor modules (C = 15) as compared with pressure atomizing nozzles (C = 12).
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1983
- Bibcode:
- 1983STIN...8323545I
- Keywords:
-
- Air Flow;
- Atomizing;
- Combustion Chambers;
- Drops (Liquids);
- Fuel Injection;
- Liquid Injection;
- Flow Velocity;
- Inlet Nozzles;
- Mass Flow;
- Particle Size Distribution;
- Swirling;
- Fluid Mechanics and Heat Transfer