знания враг мозга женского

и это факт
и я не груб

я просто обобщил за век
свой опыт голых женских пут

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Phenomenological description of the combustion cloud evolution upon ground testing large solid motors Pashenko S.E.1, Zarko V.E. 1, Osochenko A.V. 1, and Hori K.2 1 Institute of Chemical Kinetics and Combustion, Novosibirsk 630090, RUSSIA Tel +7-3832-332292, Fax +7-3832-342350, E-mail : zarko@ns.kinetics.nsc.ru 2 Institute of Space and Astronautical Science/JAXA, JAPAN

Conference Paper · October 2004;with;267 Reads
Conference: SSGR, At Novosibirsk, Volume: 121
Cite this publication
S. ;. Pashchenko
S. ;. Pashchenko
Vladimir E. Zarko at Russian Academy of Sciences
Vladimir E. Zarko
29.21Russian Academy of Sciences
Abstract
Phenomenological description of the combustion cloud evolution upon ground testing large solid motors Pashenko S.E.1, Zarko V.E. 1, Osochenko A.V. 1, and Hori K.2 1 Institute of Chemical Kinetics and Combustion, Novosibirsk 630090, RUSSIA Tel +7-3832-332292, Fax +7-3832-342350, E-mail : zarko@ns.kinetics.nsc.ru 2 Institute of Space and Astronautical Science/JAXA, JAPAN The ground tests of large boosters are regularly performed in developed countries for improving and validating technical parameters of solid motors. During the tests large amount of the combustion products are generated. In order to evaluate possible ecological hazard upon firing of large solid propellant charges, it is necessary to develop physico-mathematical model describing formation and evolution of the combustion cloud. The problem is very complicated due to necessity of taking into account a number of interconnected physical and chemical processes, which are not specified yet in all details and could not be described in terms of pure theory. Therefore, at present time experimental information has to be mostly used in formulation of the above model. The goal of this paper is to present data on visualization of the combustion cloud formation and propagation upon ground testing large solid motors and develop semi-empirical description of the aerosol particles evolution in the combustion cloud. Formation of aerosols proceeds through the condensation and coagulation. The main component of a visible boundary of the “combustion cloud” is the Al oxide aerosol. The evolution of the aerosols in combustion of large solid propellant charge is accompanied by a number of simultaneously occurring processes, such as: - Formation of initial fine particles during the combustion of original metal particle (agglomerate) near the propellant surface; - Transformation of fine particles size distribution function in the course of their transport in the propellant charge bore; - Transformation of the particles size distribution function in the course of evolution of the combustion products cloud. The results of experiments give background for theoretical estimations of the aerosol particles size in the combustion cloud. Use of conventional Smoluchowski’s equations with taking into account mixing of cloud with atmospheric air and experimentally determined life time parameters for the aerosol particles allows calculating the size of aerosol particles in dependence of time and estimating the particle sedimentation behavior.
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