B204 BREAKUP OF A LIQUID BUBBLE DUE TO AIRSTREAMS FOR POWER ENGINEERING

概要

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This paper describes the deformation and breakup of a liquid bubble exposed to an airstream. Experiments were conducted using a vertical air-suction-type wind tunnel. Water and air were fed to a nozzle, and uniformly sized liquid bubbles were produced. Liquid bubbles vertically fell down, and entered the wind tunnel. A Liquid bubble has a larger surface area than a liquid drop for the same mass. So, the liquid bubble could be superior to liquid drop for heat exchange, combustion and so on. The displacement and the deformation of liquid bubbles due to airstreams were measured from photographs obtained by single exposure photography or consecutive photography. The liquid bubbles exposed to airstreams were deformed. The projected area a liquid bubble exposed to an airstream is expected to greatly influence such factors as the displacement, the drag coefficient, and the breakup time, etc., so the normal and the parallel liquid bubble diameters are measured in detail.
一般社団法人日本機械学会の論文