CONDITIONS AND DELAY TIME OF IGNITION OF IRON MICROPARTICLES IN OXYGEN

被引：0

作者：

Leshchevich, V. V. ^{[1
]}

Penyazkov, O. G. ^{[1
]}

Fedorov, A. V. ^{[2
]}

Shul'gin, A. V. ^{[2
]}

Rostaing, J. -C. ^{[3
]}

机构：

[1] Natl Acad Sci Belarus, AV Luikov Heat & Mass Transfer Inst, 15 P Brovka Str, Minsk 220072, BELARUS

[2] Russian Acad Sci, SA Khristianovich Inst Theoret & Appl Mech, Siberian Branch, Novosibirsk 630090, Russia

[3] Ctr Rech Chaude Delorme, Air Liquide, F-78354 Jouy En Josas, France

来源：

JOURNAL OF ENGINEERING PHYSICS AND THERMOPHYSICS | 2012年 / 85卷 / 01期

关键词：

fine metal particles; rapid-compression machine; till; ignition-delay time; mathematical modeling;

D O I：

10.1007/s10891-012-0632-y

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Experiments on autoignition and combustion of iron microparticles in oxygen have been conducted. The parameters of the gas medium were created using a rapid-compression machine. Investigations have been carried out on powders with particle size from 20 to 125 mu m at an oxygen pressure of to 28 MPa and a temperature from 650 to 1100 K. The ignition delay was measured by recording radiation from the lateral wall of the combustion chamber and determining the pressure on the end wall. Autoignition conditions have been represented as the dependences of the oxygen density and pressure at the end of the compression stroke on the temperature and the particle size. A point semiempirical mathematical model making it possible to satisfactorily describe experimental data on the dependence of the delay time of ignition of a microparticle fill on the oxygen temperature has been proposed.

引用

页码：148 / 154

页数：7

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