Browse > Article
http://dx.doi.org/10.6108/KSPE.2013.17.6.059

Analysis of Supercritical Shear Coaxial Jet Using Density Gradient Magnitude  

Lee, Keonwoong (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Kim, Dohun (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Son, Min (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Han, Choyoung (Satellite Technology Research Laboratory, Korea Aerospace Research Institute)
Koo, Jaye (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.17, no.6, 2013 , pp. 59-66 More about this Journal
Abstract
Spray characteristics of single round jet with liquid nitrogen and coaxial spray with liquid nitrogen and gaseous argon were observed. Shadowgraph method was used for spray visualization, and density gradient magnitude image was used to analyse the result. In subcritical condition, irregularity of the jet surface was harder in the coaxial spray. In supercritical condition, diffusion of nitrogen injected from shear coaxial injector was faster than single jet. Jet diameter was induced by averaging images, in supercritical condition, difference of diameter of coaxial jet was rapidly decreased than that of single jet.
Keywords
Supercritical Spray; Shear Coaxial Injector; Density Gradient Magnitude; Jet Diameter;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Segal, C. and Polikhov, S.A., "Subcritical to Supercritical Mixing," AIP Physics of Fluids 20, 052101, 2008.   DOI   ScienceOn
2 Roy, A. and Segal, C., "Experimental Study of Fluid Jet Mixing at Supercritical Conditions," Journal of Propulsion and Power, Vol. 26, No. 6, November-December 2010.
3 Roy, A. and Segal, C., "Sub-to-Supercritical Mixing and Core Length Analysis of a Single Round Jet," AIAA 2011-792, January, 2011.
4 Mayer, W., Schik, A., Schweitzer, C., and Schaeffler, M., "Injection and Mixing Processes in High Pressure LOX/GH2 Rocket Combustors," AIAA 96-2620, July, 1996.
5 Oschwald, M., Smithm, J.J., Branam, R., Hussong J., Schik, A., Chehroudi, B., and Talley, D., "Injection of Fluids into Supercritical Environments," Combustion Science and Technology 178, pp. 49-100, 2006.   DOI   ScienceOn
6 Davis, D.W. and Chehroudi, B., "Shear-Coaxial Jets from a Rocket-Like Injector in a Transverse Acoustic Field at High Pressures," AIAA ASME, 44th, pp. 1-18, 2006.
7 Cho, S.H., Park, G.J. and Yoon, Y.B., "Effect of Injectoror Geometry onm Cryogenic Jet Flow," Journal of the Korean Society of Propulsion Engineers, Vol. 39, No. 4, pp. 348-353, 2011.
8 Park, C.J., "The Study on the Spray Characteristics of Supercritical Spray," Journal of ILASS-Korea, Vol. 4, No. 3, pp. 8-14, 1996.   과학기술학회마을
9 Cho, S.H., Khil, T.O., Park G.J. and Yoon, Y.B., "Cryogenic Jet Injection Test Using Liquid Nitrogen," 2010 the Korean Society of Propulsion Engineers Fall Conference, pp. 597-600, 2010.   과학기술학회마을