The Experimental Study of Transient Droplets Particle Size and Concentrationin Confined Spaces

doi:10.3969/j.issn.1000-1093.2015.09.010

Abstract

Abstract: In order to study the influence of droplets particle size and concentration on the explosion parameters of the gas-liquid two-phase mist, the total light scattering detection system is established based on confined space. The water is used as the liquid medium in this experiment. The Sauter mean diameter D₃₂, droplets particle size distribution and concentration are measured in the 20 L vessel. Two sets D₃₂ (31.24 μm, 46.09 μm), droplets particle size distribution and various concentration of water/air mixtures are obtained through various mixture ration tests of pneumatic pressure and liquid dose. The results indicate that there is a linear relationship between the spray dose concentration and actual measuring concentration in the two sets of D₃₂. Furthermore, the D₃₂ of the flammable liquid in the turbulent air under the same condition is concluded by the fragment theory, and a new experimental method is proposed for the explosion parameters of the gas-liquid two-phase fuel/air mixtures.

Key words: ordnance science and technology, droplets particle size, concentration of sprays, the secondary pulse pneumatic atomization

CLC Number:

O354.1

WANG Yue， BAI Chun-hua， LI Bin， LIU Xue-ling. The Experimental Study of Transient Droplets Particle Size and Concentrationin Confined Spaces[J]. Acta Armamentarii, 2015, 36(9): 1665-1670.

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