Proceedings of the Korean Society of Marine Engineers Conference (한국마린엔지니어링학회:학술대회논문집)
- 2012.06a
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- Pages.123-124
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- 2012
Spray characteristics of effervescent atomizer with internal flows
Effervescent atomizer의 내부 유동에 따른 분무특성
- Ku, K.W. ;
- Hong, J.G. ;
- Kim, J.H. ;
- Lee, C.W. ;
- Park, C.D. ;
- Lim, B.J. ;
- Chung, K.Y.
- 구건우 (경북대학교 기계공학부) ;
- 홍정구 (경북대학교 기계공학부) ;
- 김준희 (경북대학교 기계공학부) ;
- 이충원 (경북대학교 기계공학부) ;
- 박창대 (한국기계연구원) ;
- 임병주 (한국기계연구원) ;
- 정경열 (한국기계연구원 환경.에너지기계연구본부)
- Published : 2012.06.21
Abstract
Effervescent atomizer in which the liquid is ejected from nozzle with bubble caused by gas injection into the liquid is one of twin-fluid atomizers. Effervescent atomizer is operated with the lower injection pressure and the smaller air flow rate when compared with those of other twin-fluid atomizers. In this study, we attempted experiment study to investigate the atomization characteristics of effervescent atomizer related with the internal flow condition. The nozzle was made with acrylic material to investigate the nozzle internal flow. The macroscopic spray analysis was conducted with internal flow images and spray images. Furthermore, SMD was measured by using the laser diffraction method. According to this study, the internal flow condition changed from bubbly flow to annular flow as the air-liquid mass ratio(ALR) increases. At that time, the atomization characteristics were improved.