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http://dx.doi.org/10.6108/KSPE.2016.20.2.039

Disintegration Mechanism of a Coaxial Porous Injector  

Lee, Keonwoong (Department of Aerospace and Mechanical Engineering, Graduate School, Korea Aerospace University)
Kim, Dohun (Department of Aerospace and Mechanical Engineering, Graduate School, Korea Aerospace University)
Son, Min (Department of Aerospace and Mechanical Engineering, Graduate School, Korea Aerospace University)
Koo, Jaye (School of Mechanical and Aerospace Engineering, Korea Aerospace University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.20, no.2, 2016 , pp. 39-45 More about this Journal
Abstract
In a coaxial porous injector, a gas propellant is injected through the porous cylinder surface to the liquid jet which is encircled by a porous cylinder. In this study, to observe the differences in disintegration mechanisms between a shear coaxial injector and a coaxial porous injector, cold-flow tests and 2-D axisymmetric numerical analysis have been carried out. The shadowgraph images and Sauter mean diameters were compared in similar experimental conditions, and the effects of velocity distributions at the inner injector region on the disintegration of liquid jet were investigated through the numerical calculations. As a result, in high air mass flow rate condition, the disintegration performance of coaxial porous injector is better than shear coaxial injector, in spite of a lower velocity at the inner injector region.
Keywords
Coaxial Porous Injector; Sauter Mean Diameter; Radial Momentum;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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