A305 DEFORMATION OF A LIQUID DROP DUE TO AN AIRSTREAM(Multiphase flow problems)

概要

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This paper describes the displacement and deformation of a liquid drop when exposed to an airstream. Experiments were conducted using a 60 mm x 150 mm cross-sectional and 500 mm long horizontal air-suction-type wind tunnel. Uniformly sized dripping drops from the static nozzle, or uniformly sized drops produced by a longitudinal vibration of the nozzle were used. The displacement and the deformation of liquid drops due to airstreams were measured from photographs obtained by triple exposure photography or consecutive photography. The liquid drops exposed to airstreams were deformed: that is, the longitudinal drop diameter normal to the airstream, the transverse drop diameter parallel to the airstream, and the curvature of a drop around a stagnation point are changed. The projected area of a drop exposed to an airstream is expected to greatly influence such factors as the displacement, the drag coefficient, and the breakup time, so the longitudinal and the transverse drop diameters are measured in detail. As a result, the relationship between exposure time of a drop in the airstream and changing drop sizes are obtained.
一般社団法人日本機械学会の論文
2000-10-01