Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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An Experimental Study on the Characteristics of Bubbles in Air-Water Model

Air-Water 모델에서 기포특성에 관한 실험적 연구

  • 오율권 (조선대학교 기계공학부) ;
  • 서동표 (조선대학교 기계공학부)
  • Published : 2003.03.01
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Abstract

The structural development of air-water bubble plumes has been measured under different condition on air flow rate in a cylindrical bath. The time-averaged structure of plumes has been measured with an oscilloscope and an electro-conductivity probe. The temperature of bubbles was also obtained by a thermal-infrared camera. Gas volume fraction and bubble frequency were high since bubbles concentrated on the nozzle. In general, their axial and radial values tended to decrease with increasing distance. Bubble temperature reached water temperature within a short time. The present study showed that thermal equilibrium between bubbles and water was completed before bubbles flow became stable.

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References

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