Symposium on Combustion and Flame, and Explosion Phenomena最新文献_第8页

The mechanism of flash-back of aerated flames 曝气火焰闪回机理研究

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80012-2

J.S. Forsyth, J.E. Garside

引用次数: 0

A method for calculating simultaneous, homogeneous gas equilibria and flame temperatures 一种同时计算均匀气体平衡和火焰温度的方法

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80086-9

Paul F. Winternitz

引用次数: 0

Factors affecting flame propagation through dust clouds 影响火焰通过尘埃云传播的因素

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80024-9

H.M. Cassel , A.K. Das Gupta , S. Guruswamy

{"title":"Factors affecting flame propagation through dust clouds","authors":"H.M. Cassel , A.K. Das Gupta , S. Guruswamy","doi":"10.1016/S1062-2896(49)80024-9","DOIUrl":"10.1016/S1062-2896(49)80024-9","url":null,"abstract":"<div>The Malard-Le Chatelier picture of the combustionwave is amended by adding a term for radiant heat transfer. On introducing the rate of oxygen diffusion toward individual particles an expression for the burning velocity in dust clouds is obtained, representing its dependence on thermal conductivity, burning and ignition temperatures, radiation characteristics of the dust cloud, dust concentration and particle size.This serves as working hypothesis in conductingexperiments on the effect of those factors upon stationary dust flames and flames traveling through quiescent dust clouds.Results obtained with atomized aluminum are:o<ol><li>1.On the lean side of the stoichiometric ratiothe burning velocity increases with increasing concentration.</li><li>2.The burning velocity increases with decreasingparticle size in the range studied.</li><li>3.The failure to produce stationary dust flames with burner tubes smaller than 1/2-inch diameter indicates an effect of “radiation quenching” close to the rim in high temperature dust flames.</li><li>4.A striking increase in the flame velocity ofclosed end ignited dust flames is attributed to turbulence.</li></ol>The experimental results are in qualitative agreementwith theoretical expectations.</div>","PeriodicalId":101204,"journal":{"name":"Symposium on Combustion and Flame, and Explosion Phenomena","volume":"3 1","pages":"Pages 185-190"},"PeriodicalIF":0.0,"publicationDate":"1948-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1062-2896(49)80024-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"103798319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 36

Photographs at 500,000 frames per second of combustion and detonation in a reciprocating engine 以每秒50万帧的速度拍摄往复式发动机燃烧和爆炸的照片

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80100-0

Theodore Male

引用次数: 26

The Ignition of gas mixtures by impulsive pressures 脉冲压力点燃混合气体的过程

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80037-7

W.C.F. Shepherd

{"title":"The Ignition of gas mixtures by impulsive pressures","authors":"W.C.F. Shepherd","doi":"10.1016/S1062-2896(49)80037-7","DOIUrl":"10.1016/S1062-2896(49)80037-7","url":null,"abstract":"<div>A study has been made of the igniting power of the pressure effects set up when a body of compressed air is suddenly released into an inflammable gas mixture by the rupture of an intervening diaphragm. A general description of the pressure effects has been given, their characteristic properties being linked with the bursting pressure of the diaphragm.The most important result is that ignition ofstrong methane-oxygen and ethylene-oxygen mixtures is directly caused by the pressure effects from diaphragms bursting at very low pressures. The diaphragms may be made of copper, cellophane or paper. The ignition process has been studied photographically and there is no measurable lag when ignition takes place under these conditions. Flame develops in the front of the main disturbance, leading in general to detonation.Ignition of weak mixtures is obtained at some-what higher pressures, but flame does not always become established, though the cause of this failure may lie in the experimental method. A 9.5 per cent methane-air mixture is weakly ignited but without the flame ever becoming established; the corresponding methane-oxygen mixture is ignited much more vigorously and flame spreads further from the diaphragm, but not throughout the column of mixture in the explosion chamber. Closing the end of the explosion chamber leads to the explosion of some mixtures not ignited directly by the pressure effects; the ignition is now mainly caused by simple adiabatic compression.The experimental work is unfinished and many points require further investigation before the process of ignition is fully understood. That ignition can be caused by shock waves of quite low intensity has, however, been clearly established.The author is grateful to the Ministry of Fuel and Power (London) for permission to publish this account of work carried out at their Buxton Research Station.</div>","PeriodicalId":101204,"journal":{"name":"Symposium on Combustion and Flame, and Explosion Phenomena","volume":"3 1","pages":"Pages 301-316"},"PeriodicalIF":0.0,"publicationDate":"1948-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1062-2896(49)80037-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"93888439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

An interferometric method of gas analysis 干涉气体分析方法

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80091-2

H. Lowell Olsen

引用次数: 1

Flame stabilization and propagation in high velocity gas streams 高速气流中的火焰稳定与传播

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80006-7

G.C. Williams, H.C. Hottel, A.C. Scurlock

引用次数: 149

The role of free atoms and radicals in burner flames 自由原子和自由基在燃烧器火焰中的作用

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80018-3

Charles Tanford

引用次数: 7

Committee of Third Symposium on Combustion, Flame and Explosion Phenomena 第三届燃烧、火焰和爆炸现象研讨会委员会

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80002-X

引用次数: 0

Some experimental techniques for the investigation of the mechanism of flame stabilization in the wakes of bluff bodies 钝体尾迹火焰稳定机理研究的一些实验技术

Symposium on Combustion and Flame, and Explosion Phenomena Pub Date : 1948-01-01 DOI: 10.1016/S1062-2896(49)80008-0

H.M. Nicholson, J.P. Field

引用次数: 67