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http://dx.doi.org/10.6108/KSPE.2017.21.2.041

Visualization of Cryogenic Nitrogen Spray from a Pintle Injector  

Lee, Keonwoong (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Son, Min (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Shin, Dongsoo (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Yoon, Youngbin (Department of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Jeong Soo (Department of Mechanical Engineering, Pukyong National University)
Koo, Jaye (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.21, no.2, 2017 , pp. 41-47 More about this Journal
Abstract
By using liquid and gaseous nitrogen as simulants, effects of pintle opening distance and simulant supplying condition on spray from pintle injector were investigated qualitatively. The experiment was performed by fixing the liquid supply pressure and varying the opening of the pintle and the supply pressure of gaseous nitrogen. Shadowgraph method with CCD camera was used for image visualization, and the differences of liquid-gas spray were compared by image post processing. In case of liquid nitrogen single injection, as the opening distance was increased, the injection speed was decreased. Therefore, the end of liquid sheet were converged to the center of spray. In the case of liquid nitrogen/Gaseous nitrogen spray, although shadowgraph images look similar to each other, It is shown that it can be analysed by image post processing.
Keywords
Pintle Injector; Liquid Nitrogen; Momentum Flux Ratio; Image Post Processing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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