Study of the breakup of liquid droplets in the vortex wake behind pylon at high airspeeds
- 1 Downloads
The study is devoted to the establishment of regularities in the process of liquid-droplet breakup in the vortex wake behind pylon at high subsonic airspeeds. The article describes the laboratory setup, the diagnostic tools, and the experimental procedure. Structure of the unsteady gas flow behind pylon was examined, and the main characteristics of the generated vortex wake were evaluated. Experimental data concerning the variation of droplet diameters in the gas-dynamic fractionation process versus the flow conditions and liquid injection regimes were obtained. Typical distribu-tions of droplet diameters and velocities in the vortex wake behind pylon are reported. A comparison of experimental data on the rate of the gas-dynamic fractionation process with calculations made using previously developed evaluation procedures was performed. The results of the study may prove useful when choosing the configuration of systems for implementation of liquid injection into a high-speed flow and, also, for validation of mathematical models intended for calculation of parameters of two-phase flows.
Keywordshigh-speed flow vortex wake liquid injection two-phase flow droplet fractionation
Unable to display preview. Download preview PDF.
- 5.A.H. Lefebvre, Gas Turbine Combustion, Hemisphere Pub. Corp., 1983.Google Scholar
- 6.M.V. Dobrovolskii, Liquid-Fuel Rocket Engines, D.A. Yagodnikov (Ed.), 2nd edition revised and supplemented, Bauman Moscow State Technical University, Moscow, 2005.Google Scholar
- 8.K.Yu. Arefyev, A.V. Voronetskii, A.N. Prokhorov, S.A. Suchkov, and A.L. Filimonov, Analysis of the effect due to the type of injectors and the direction of liquid injection on the effectiveness of two-phase mixture for-mation process in a channel of constant cross-section, Izv. Vysshikh Uchebnykh Zavedenii, ser. Mashinostroenie, 2016, No. 7, P. 94–104.Google Scholar
- 11.T.G. Theofanous and C.H. Chang, On the computation of multiphase interactions in transonic and supersonic flows, in: Proc. AIAA-2008 Conference, Reno, NV, AIAA Paper, 2008, No. 1233.Google Scholar
- 15.M. Raffel, C.E. Willert, S. Wereley, and J. Kompenhans, Particle Image Velocimetry, Springer-Verlag, Berlin, Heidelberg, 2007.Google Scholar
- 17.LaVision Particle Master Shadow Imaging, Product Manual (www.lavision.de).Google Scholar
- 18.K.Yu. Arefiev and A.S. Saveliev, Measurement of the spray characteristics of water in co-current subsonic airflow with the shadow and interference methods, Abstracts of the 6th All-Russia Sci. Conference with Participation of Foreign Specialists dedicated to I.F. Obraztsov and Yu.G. Yanovskii “Mechanics of Composite Materials and Structures, and Complex and Heterogeneous Media”, November 16-18, 2016, Moscow, P.93.Google Scholar
- 19.G.N. Abramovich, Applied Gas Dynamics, Wright-Patterson Air Force Base, OH, 1973.Google Scholar
- 20.A.Yu. Valdberg and N.M. Savitskaya, Generalized atomization-dispersity characteristics of hydraulic injectors, Theoret. Foundat. Chemical Engng, 1989, Vol. XXIII, No. 5, P. 689–692.Google Scholar
- 21.A.Yu. Valdberg, K.P. Makeev, and N.E. Nikolaikina, Examination of the particle size distribution of a liquid spray obtained on a centrifugal spray injector, Izv. MGTU “MAMI”, 2012, No. 2, P. 7–11.Google Scholar