Formation and degeneration of cellular detonation in bidisperse gas suspensions of aluminum particles

被引：35

作者：

Fedorov, A. V. ^{[1
]}

Khmel, T. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Div, Khristianovich Inst Theoret & Appl Mech, Novosibirsk 630090, Russia

来源：

COMBUSTION EXPLOSION AND SHOCK WAVES | 2008年 / 44卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

gas suspensions; cellular detonation; numerical simulation;

D O I：

10.1007/s10573-008-0042-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The effect of polydispersity on formation of heterogeneous cellular detonation in gas suspensions of aluminum particles in oxygen is studied by means of numerical simulations and an acoustic analysis. The influence of the suspension composition on the character and size of the cellular structures being formed is found. Partial (and sometimes complete) degeneration of cellular detonation in bidisperse suspensions into a plane detonation wave is observed. Numerical predictions agree with the results of the acoustic analysis of steady detonation structures in bidisperse suspensions. A similar analysis performed for mixtures containing three and five fractions predicts difficulties in formation of cellular detonation in the case of a large scatter in the particle size.

引用

页码：343 / 353

页数：11

共 17 条

[1]

[Anonymous], 1963, GAS DYNAMICS COMBUST

[2] PREDICTED SPACINGS IN HYDROGEN-OXYGEN-ARGON DETONATIONS [J].

BARTHEL, HO .

PHYSICS OF FLUIDS, 1974, 17 (08) :1547-1553

[3] Two-dimensional numerical simulations of multi-headed detonations in oxygen-aluminum mixtures using an adaptive mesh refinement [J].

Benkiewicz, K ;

Hayashi, AK .

SHOCK WAVES, 2003, 12 (05) :385-402

[4]

BORISOV AA, 1983, KHIM FIZ, P1129

[5] Structure and initiation of plane detonation waves in a bidisperse gas suspension of aluminum particles [J].

Fedorov, A. V. ;

Khmel, T. A. .

COMBUSTION EXPLOSION AND SHOCK WAVES, 2008, 44 (02) :163-171

[6] Numerical simulation of formation of cellular heterogeneous detonation of aluminum particles in oxygen [J].

Fedorov, AV ;

Khmel', TA .

COMBUSTION EXPLOSION AND SHOCK WAVES, 2005, 41 (04) :435-448

[7] STRUCTURE OF THE HETEROGENEOUS DETONATION OF ALUMINUM PARTICLES DISPERSED IN OXYGEN [J].

FEDOROV, AV .

COMBUSTION EXPLOSION AND SHOCK WAVES, 1992, 28 (03) :277-286

[8] Mathematical modeling of detonation of an aluminum dust in oxygen with allowance for velocity nonequilibrium of the particles [J].

Fedorov, AV ;

Khmel', TA .

COMBUSTION EXPLOSION AND SHOCK WAVES, 1997, 33 (06) :695-704

[9]

FEDOROV AV, 2004, P 3 INT S 2 PHASE 3, P1561

[10]

Ingignoli W., 1999, GASEOUS HETEROGENEOU, P337

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