Liquid Transport and Atomization of a Rotary Atomizer in a Gas Turbine Engine
A rotary atomizer transports fluid from the internal reservoir to the outside of the disk using centrifugal force. The liquid ejected by this device disperses in various forms, such as droplets, jets, ligaments, or thin film. The rotary atomizer can effectively supply atomized fuel into a slinger-type combustor without requiring a high-pressure source. However, this device has two major concerns: fuel atomization and transport. Poor atomization may occur when the nozzle rotates at low speed, deteriorating ignition performance and causing combustion instability. Non-annular flow modes in the rotating pipe can lead to uneven fuel distribution along the circumference, resulting in localized hot spots in the combustor. To address these issues, experimental studies were conducted to investigate liquid behavior both inside and outside the rotary slinger atomizer.
Shim, H. S., Kim, S., Kim, J., Kim, D., Ryu, G.* and Lee, J., 2023, "Experimental Investigation on Liquid Breakup and Injection Characteristics of a Rotary Slinger Atomizer", Int. J. Aeronaut. Space Sci., Vol. 24, pp. 1522-1532.
Seo, Y., Ryu, G., Shim, H. S. and Lee, J.*, 2023, "An experimental study on the low-temperature spray characteristics of aviation Jet A-1 fuel with rotational speeds in a slinger-type atomizer," Fuel, Vol. 331, 125899 (14 pages).
Kim, D., Shim, H. S., Ryu, G.*, Kim, J. and Lee, J., 2022, "Analysis on annular flow of liquid transported through a partially filled axially rotating pipe," Eur. J. Mech. B Fluids, Vol. 95, pp. 289-302.
심현석, 배종근, 김주평, 김신현, 김동현, 유경원, 2021, "슬링거 연소기 회전연료노즐의 유량과 회전수에 따른 분무특성에 대한 실험적 연구," 한국추진공학회지, 제25권, 4호, pp. 59-70.