G0501-2-5 回転ベルカップアトマイザーにより生成される気流および噴霧の可視化(液滴,噴霧)

概要

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Air flow and spray produced from Rotary-bell cup atomizer were visualized using two-dimensional PIV method. Shaping air was supplied along the outside surface of the cup in order both to suppress the spray from radial spread of droplets due to centrifugal force and to enhance atomization. The efficiency of shaping air was investigated by using three shaping air nozzles of different geometry. The rotational speed of bell cup, shaping air flow rate and liquid flow rate were changed up to 35000rpm, 700NL/min and 300mL/min respectively. We observed that, with the increase of shaping air flow rate, a recirculation region was formed below the bell cup, and, over a critical shaping air flow rate, the atomization at the cup exit was enhanced.
社団法人日本機械学会の論文
2009-09-12