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Gasdynamics of vented explosions. Part II: One-dimensional wave interaction model

✍ Scribed by D.P.J. McCann; G.O. Thomas; D.H. Edwards

Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 441 KB
Volume: 60
Category: Article
ISSN: 0010-2180
DOI: 10.1016/0010-2180(85)90118-x

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✦ Synopsis

The aim of the present study was to construct, on the basis of the experimental data presented in Part I, a onedimensional model of the gas venting process in an explosion vessel. The model, which used the method of characteristics, is employed to assess the effects of pressure waves on the flame front and also to predict the exit velocities of the unburned mixture ahead of the front. It is established that the values of velocity predicted by the model are in much better agreement with measured values than those calculated by steady-state isentropic expressions. These improved estimates of exit velocities are used to provide a better safe-venting criterion which is shown to agree quite well with experimental observations particularly at low breaking pressures.

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