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Evaluation of characteristics for microbubble generation according to venturi nozzle specification
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 Title & Authors
Evaluation of characteristics for microbubble generation according to venturi nozzle specification
Lim, Ji-Young; Kim, Hyun-Sik; Park, Soo-Young; Kim, Jin-Han;
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This research was performed to review operating parameters, optimum condition and check characteristic of microbubble generation for using bubble size distribution according to venturi specification. Optimum operating condition have airflow rate 0.3 LPM, 3 bar(pressure tank) and connecting nozzle directly(without valve), it is advantageous to generate microbubble. In case of characteristic of microbubble generation according to venturi specification, effect that nozzle specification affects bubble size distribution is low impact. But considering performance aspects, when using nozzle that throat diameter 3-4 mm, are (D3L15, D4L15), fraction of bubble less than are 0.326, 0.345. And it is superior to others. Besides, and fraction of bubble less than of throat length 20 mm are , 0.447, respectively And nozzle that throat length 20 mm is relatively tendency to generate microbubble stably.
Bubble size distribution;Microbubble;Pressurized type microbubble generator;Venturi nozzle;
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