Abstract
Condensation in axisymmetric turbulent air-steam jets is studied theoretically and experimentally under bench experiment conditions in which a hot mist jet is injected from a nozzle into air. On the basis of the physico-mathematical model developed, four problems are considered: homogeneous condensation in the jet at a fairly low ambient air temperature, heterogeneous condensation on particles introduced into the jet at the nozzle outlet, heterogeneous condensation on particles ejected into the jet from the surrounding space, and condensation on ions entering the jet from a corona point on the flow axis. The local characteristics of the dispersed phase (mean particle size, standard deviation of the particle size, particle number and volume concentrations) and its integral characteristics (coefficient of vapor conversion into condensed phase and the optical thickness of the jet in different sections) are determined. The calculation results are compared with experimental data. As an application of the model developed, the characteristics of heterogeneous condensation in the jets of certain modern aircraft engines (IL-96-300, Tu-204, MiG-29, Boeing-707) are found on the assumption that the condensation occurs on particles entering the jet at the nozzle outlet and the particle growth rate in all stages (including the initial stage of particle irrigation) coincides with the growth rate of liquid drops.
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REFERENCES
A. G. Amelin, Fundamentals of Mist Formation in Steam Condensation [in Russian], Khimiya, Moscow (1972).
A. B. Vatazhin, “Electrogasdynamic turbulent flows,” Trudy Matem. Inst. AN SSSR, 186, 168–176 (1989).
Turbulent Jet Flows with Condensation and Electrophysical Effects (Ed. A. B. Vatazhin) [in Russian], Trudy TsIAM, 1, No. 1288 (1991).
A. Vatazhin, A. Lebedev, V. Likhter, V. Shul'gin, and A. Sorokin, “Turbulent air-steam jets with a condensed dispersed phase: Theory, experiment, numerical modeling,” J. Aerosol. Sci., 26, No. 1, 71–93 (1995).
A. B. Vatazhin and A.A. Sorokin, “Atmospheric aerosols of aviation origin and the ecological problems,” Izv. Ross. Akad. Nauk, Mekh. Zhidk. Gaza, No. 6, 57–72 (1992).
A.V. Akimov, A.B. Vatazhin, V.A. Likhter, and A.A. Sorokin, “Steam-air flow in the presence of condensation on ions and electrokinetic processes,” Izv. Ross. Akad. Nauk, Mekh. Zhidk. Gaza, No. 1, 67–77 (1996).
A. B. Vatazhin, A.B. Lebedev, and V.A. Markeev, “Mathematical modeling of different condensation regimes in turbulent isobaric jets,” Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 1, 67–77 (1985).
A. B. Vatazhin, A. Yu. Klimenko, A.B. Lebedev, and A.A. Sorokin, “Homogeneous condensation in submerged turbulent isobaric jets”, Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 2, 43–52 (1988).
A.A. Sorokin and A.B. Lebedev, “Modeling of water aerosol emission in an exhaust jet of a subsonic aircraft and an estimate of the influence of aviation on the aerosol balance in the lower stratosphere,” Preprint TsIAM, No. 18 (1994).
A. L. Stasenko, “Towards a theory of nitrogen oxide chemisorption by water drops in a stratospheric-aircraft jet,” Preprint TsAGI, No. 51 (1991).
A. B. Lebedev, A. M. Starik, and N. S. Titova, “Numerical modeling of non-equilibrium photochemical processes in a subsonic-aircraft wake,” Teplofiz. Vys. Temper., 36, No. 1, 79–93 (1998).
A. M. Savel'ev and A.M. Starik, “Dynamics of the formation of sulfate aerosols in jet engine jets,” Izv. Ross. Akad. Nauk, Mekh. Zhidk. Gaza, No. 1, 108–117 (2001).
T.K. Lesniewskii and S.K. Friedlander, “Particle nucleation and growth in a free turbulent jet,” Proc. Roy. Soc. London. Ser. A, 454, No. 1977, 2477–2504 (1998).
A. B. Vatazhin, V.A. Likhter, and V. I. Shul'gin, “Turbulent condensation jets and the possibility of controlling them by an electric field,” in: Problems of Modern Mechanics. V1. (Ed. L. I. Sedov), MSU, Moscow (1983), pp. 113–122.
A. B. Vatazhin, R. S. Valeev, V.A. Likhter, V. I. Shul'gin, and V. I. Yagodkin, “Investigation of turbulent air-steam jets in the presence of condensation and the introduction of foreign particles into the flow,” Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 3, 53–61 (1984).
A. B. Vatazhin, V.A. Likhter, A.A. Sorokin, and V. I. Shul'gin, “Corona discharge in an air-steam jet with condensation. Steady-state and pulsatory characteristics,” Trudy TsIAM, No. 1288 (1991).
V. E. Kozlov, A.N. Sekundov, and I. P. Smirnova, “Turbulence models for describing compressible-gas jet flow,” Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 6, 38–44 (1986).
N.A. Fuks, Mechanics of Aerosols [in Russian], AS USSR, Moscow (1955).
L. E. Sternin, Fundamentals of Gasdynamics of Two-Phase Nozzle Flows [in Russian], Mashinostroenie, Moscow (1974).
I. P. Vereshchagin, V. I. Levitov, G. Z. Mirzabekyan, and M.M. Pashin, Fundamentals of Electrogasdynamics of Disperse Systems [in Russian], Energiya, Moscow (1974).
Ya. I. Frenkel', Kinetic Theory of Liquids [in Russian], Nauka, Leningrad (1975).
Ya.B. Zel'dovich, “A contribution to the new-shape formation theory. Cavitation,” Zh. Experim. Tekh. Fiz., 12, No. 11/12, 525–538 (1942).
Yu. I. Petrov, Clusters and Small Particles [in Russian], Nauka, Moscow (1986).
A. B. Lebedev and A.A. Sorokin, “Numerical modeling of two-phase turbulent isobaric jets with homogeneous and heterogeneous condensation,” Trudy TsIAM, No. 1288, 83–109 (1991).
Turbulent Mixing of Gas Jets (Ed. G.N. Abramovich) [in Russian], Nauka, Moscow (1974).
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Vatazhin, A.B., Safin, I.R. & Kholshchevnikova, E.K. Investigation of Different Condensation Regimes in Isobaric Turbulent Air-Steam Jets. Fluid Dynamics 37, 877–888 (2002). https://doi.org/10.1023/A:1022344128453
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DOI: https://doi.org/10.1023/A:1022344128453