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Title Acceleration of solid particles by gaseous detonation products
Creator/Author Gavrilenko, T.P. ; Grigoriev, V.V. ; Zhdan, S.A. ; Nikolaev, Y.A. ; Boiko, V.M. ; Papyrin, A.N.
Publication Date1986 Nov 01
OSTI IdentifierOSTI ID: 7059567
Other Number(s)CODEN: CBFMA
Resource TypeJournal Article
Resource RelationCombust. Flame ; Vol/Issue: 66:2
Research OrgLavrentyev Institute of Hydrodynamics, Siberian Div. of the USSR Academy of Sciences, Novosibirsk
Subject400800 -- Combustion, Pyrolysis, & High-Temperature Chemistry; PARTICLES-- COMBUSTION PRODUCTS;PARTICLES-- DETONATIONS; ACCELERATION;COMPUTER CALCULATIONS;DATA ANALYSIS;DROPLETS;EQUILIBRIUM;FRAGMENTATION;GASES;HEAT TRANSFER;HEATING;LASERS;MATHEMATICAL MODELS;MELTING;PARTICLE SIZE;PHOTOGRAPHY;RESEARCH PROGRAMS;SOLIDS;TWO-PHASE FLOW;VELOCITY;WAVE PROPAGATION
Related SubjectENERGY TRANSFER;FLUID FLOW;FLUIDS;PARTICLES;PHASE TRANSFORMATIONS;SIZE
Description/Abstract This investigation is concerned with a theoretical and experimental study of acceleration dynamics of spherically inert solid particles (100 ..mu..m nominal diameter) in flows of gaseous detonation products.^The experiments were conducted in a detonation channel 1.5 m long with a 20 x 20 mm/sup 2/ cross section and one open end.^Particle motion was observed with the method of multiexposure photographic recording and a laser stroboscopic light source.^The character of velocity variation of individual particles inside and outside of the channel was investigated for different initial positions of particles.^Under certain conditions the accelerated particles are destroyed.^A mathematical model based on two-phase multivelocity continuum mechanics has been formulated to describe the detonation wave propagation, outflow of detonation products from the channel, and interaction between particles and a nonstationary flow of detonation products.^The model includes chemical equilibrium of detonation products, particle acceleration, heat exchange between phases and channel walls, particle melting, and fragmentation of droplets if the Weber number exceeds some critical value.^Particle destruction has been correlated with the initial position, diameter, and physical properties of particles.^Comparison of computer and experimental results shows that the model satisfactorily describes acceleration, heating, and fragmentation of particles.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 121-128
System Entry Date2001 May 13

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