Effect of radiant heat transfer on the minimum spark-ignition energy of gas suspensions

被引：3
作者：
Krainov, AY [1 ]
机构：
[1] Tomsk VV Kuibyshev State Univ, Tomsk 634050, Russia
来源：
COMBUSTION EXPLOSION AND SHOCK WAVES | 2001年 / 37卷 / 03期
关键词：
Combustion; Heat Transfer; Dust; Mathematical Model; Dynamical System;
D O I：
10.1023/A:1017515720961
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A mathematical model of spark ignition of a gas suspension is constructed on the basis of a two-temperature thermal diffusion model of gas-suspension combustion and the radiant heat transfer is modeled in a diffusion approximation. The dependences of the minimum ignition energy on the parameters which describe the disperse phase and the domain of the disperse-phase parameters in which the radiant heat transfer affects greatly the minimum spark-ignition energy is determined by solving the problem numerically. The analytical formula that was obtained for determination of the critical spark-ignition energy of the gas suspension and that takes into account the radiant heat transfer in the gas suspension gives values different from numerical results by not more than 30% in a broad range of determining parameters of the problem. The theoretically obtained values of the minimum spark-ignition energy of a gas suspension of coal dust agree satisfactorily with experimental data.
引用
收藏
页码：259 / 266
页数：8
相关论文
共 19 条
  • [1] [Anonymous], DYNAMICS MULTIPHAS 1
  • [2] DIK IG, 1992, FIZ GOREN VZRYVA, V28, P3
  • [3] DIK IG, 1990, FIZ GOREN VZRYVA, V26, P20
  • [4] FRANKKAMENETSKI.DA, 1987, DIFFUSION HEAT TRANS
  • [5] GUBIN EI, 1986, FIZ GOREN VZRYVA, V22, P10
  • [6] GUBIN EI, 1983, PROBLEMAS APPL AEROH, P63
  • [7] GUBIN EI, 1984, IZV VYSSH UCHEBN ZAV, P128
  • [8] KARAINOV AY, 1996, FIZ GOREN VZRYVA, V32, P19
  • [9] KAUFFMAN CW, 1996, 7 INT C DUST EXPL
  • [10] Korol' chenko A. Ya, 1986, FIRE EXPLOSION HAZAR
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