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Forced convection subcooled water boiling experiments were conducted in a vertical annular channel. A high-speed digital video camera was applied to record the dynamics of the subcooled boiling process. The flow visualization results show that the bubble departure frequency generally increases as the heat flux increases. For some cases, the departure frequency may reach a limit around 1000 bubbles/s. In addition, bubble lift-off diameter, bubble growth rate and bubble velocity after bubble lift-off were determined by analysing the images. The experimental data obtained from this study can be used in modelling the bubble departure frequency, bubble lift-off diameter, and bubble dynamics in forced convection subcooled boiling.
Details
- Original title: Photographic study of bubble behaviour in forced convection subcooled boiling.
- Record ID : 2005-0605
- Languages: English
- Source: International Journal of Heat and Mass Transfer - vol. 47 - n. 17-18
- Publication date: 2004/08
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Indexing
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Themes:
Mass transfer;
Two-phase flow - Keywords: Two-phase flow; Imaging; Geometry; Bubble; Heat transfer; Subcooling; Process; Forced convection; Boiling; Water
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Physical insight into the burnout region of wat...
- Author(s) : CELATA G. P., CUMO M., MARIANI A., ZUMMO G.
- Date : 1998/06
- Languages : English
- Source: Rev. gén. Therm. - vol. 37 - n. 6
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A GENERALIZED CORRELATION FOR TWO-PHASE FORCED ...
- Author(s) : KLIMENKO V. V.
- Date : 1988
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 31 - n. 3
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A study of bubble ebullition in forced-convecti...
- Author(s) : BIBEAU E. L., SALCUDEAN M.
- Date : 1994/10
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 37 - n. 15
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Two-phase flow instabilities in a horizontal si...
- Author(s) : YUENCUE H., YILDIRIM O. T., KAKAC S.
- Date : 1991
- Languages : English
- Source: Appl. sci. Res. - vol. 48 - n. 1
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EVAPORATION OF R12 IN A HORIZONTAL TUBE UNDER T...
- Author(s) : ZHOU X., et al.
- Date : 1991/08/10
- Languages : English
- Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
- Formats : PDF
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