Browse > Article
http://dx.doi.org/10.6108/KSPE.2012.16.5.001

Effect of Weber Number and Momentum Flux Ratio on Macroscopic Characteristics of Spray from a Coaxial Porous Injector  

Kim, Do-Hun (한국항공대학교 대학원 항공우주 및 기계공학과)
Seo, Min-Kyo (한국항공대학교 대학원 항공우주 및 기계공학과)
Lee, In-Chul (한국항공대학교 대학원 항공우주 및 기계공학과)
Koo, Ja-Ye (한국항공대학교 항공우주 및 기계공학부)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.16, no.5, 2012 , pp. 1-9 More about this Journal
Abstract
The gas jet from a coaxial porous injector for two-phase flows is discharged from the porous surface, which encloses the center liquid jet, and the gas and liquid jet interact with each other physically. The wall injected gas jet transfers the radial momentum effectively while the radial gas jet develops to axial jet, and the performance of atomizing and mixing can be improved. In this study, the Weber number and the ratio of momentum flux were controlled by changing the gas injection area and the mass flow rate of the gas jet, and a study on the spray characteristics at the cold-flow test using water and air simulant was performed. It is concluded that the radial momentum transfer concept of a coaxial porous injector gives a positive effect on the atomization and mixing of the two-phase spray.
Keywords
Coaxial Porous Injector; 2-phase Flow Injector; Taylor-Culick Flow;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Culick, F. E. C., "Rotational Axisymmetric Mean Flow and Damping of Acoustic Waves in Solid Propellant Rocket Motors," AIAA Journal, Vol. 4, No. 8, 1966, pp.1462-1464   DOI
2 Mayer, W. and Kriillet, G., "Rocket Engine Coaxial Injector Liquid/Gas Interface Flow Phenomena," Jounal of Propulsion and Power, Vol. 11, No. 3, 1995, pp.513-518   DOI   ScienceOn
3 Farago, Z. and Chigier, N., "Morphological Classification of Disintegration of Round Liquid Jets in a Coaxial Air Stream," Atomization and Sprays, Vol. 2, 1992, pp.137-153   DOI
4 Nunome, Y., Tamura H., Onodera, T., Sakamoto, H., Kumakawa, A. and Inamura, T., "Effect of Liquid Disintegration on Flow Instability in a Recessed Region of a Shear Coaxial Injector," 45th AIAA/ASME/SAE/ ASEE Joint Propulsion Conference & Exhibit, AIAA 2009-5389, 2009
5 Lux, J., Suslov, D. and Haidn, O., "Porous Injectors in Cryogenic Liquid Propellant Rocket Engines at Sub- and Super Critical Pressures," 46th AIAA Aerospace Science Meeting and Exhibit, AIAA 2008-947, 2008
6 Taylor, G. I., "Fluid Flow in Regions Bounded by Porous Surfaces," Proceedings of the Royal Society of London, Series A, Vol. 234, No. 11199, 1956, pp.456-475
7 Woodward, R. D., Pal, S., Farhangi, S., Jensen, G. E. and Santoro, R. J., "LOX/GH2 Shear Coaxial Injector Atomization Studies: Effect of Recess and Non- Concentricity," 45th AIAA Aerospace Sciences Meeting and Exhibit, AIAA 2007-571, 2007
8 Nunome, Y., Tamura, H., Onodera, T., Sakamoto, H., Kumakawa, A. and Inamura, T., "Effect of Liquid Disintegration on Flow Instability in a Recessed Region of a Shear Coaxial Injector," 45th AIAA/ASME/SAE /ASEE Joint Propulsion Conference & Exhibit, AIAA 2009-5389, 2009
9 김도헌, 신정환, 이인철, 구자예, "다공성재를 이용한 동축형 분사기의 미립화특성," 한국액체미립화학회지, 제17권, 제1호, 2012, pp.35-44   과학기술학회마을