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Multiphase Science and Technology
SJR: 0.183 SNIP: 0.483 CiteScore™: 0.5

ISSN 印刷: 0276-1459
ISSN オンライン: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v21.i4.40
pages 329-350

EXPERIMENTAL STUDY OF BUBBLE BEHAVIOR AND LOCAL HEAT FLUX IN POOL BOILING UNDER VARIABLE GRAVITATIONAL CONDITIONS

N. Schweizer
Chair of Technical Thermodynamics, Technische Universitat Darmstadt
Peter Stephan
Institute for Technical Thermodynamics, Technische Universität Darmstadt, Alarich-Weiss-Str. 10, 64287 Darmstadt, Germany

要約

This paper presents the results of a nucleate boiling experiment performed in the framework of the 42nd European Space Agency parabolic flight campaign. Nucleate boiling of FC-72 was established at a single artificial cavity on a thin stainless steel heating foil. The bubble shape and the temperature distribution of the heating foil were measured via high-speed imaging and infrared thermography at different gravity levels and during transition phases between these levels. The influence of gravity on bubble frequency and departure diameter was evaluated. The transient heat flux distribution was calculated by applying an energy balance at each pixel of the infrared temperature image. This heat flux distribution is presented for a complete bubble cycle (growing, detachment and rise), bubble coalescence, and satellite bubble merger.

参考

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  2. Bonjour, J., Clausse, M., and Lallemand, M., Experimental study of the coalescence phenomenon during nucleate pool boiling. DOI: 10.1016/S0894-1777(99)00044-8

  3. Carey, V. P., Liquid-Vapour Phase-Change Phenomena: An Introduction to the Thermophysics of Vaporization and Condensation Processes in Heat Transfer Equipment.

  4. Chen, T. and Chung, J. N., Coalescence of bubbles in nucleate boiling an microheaters. DOI: 10.1016/S0017-9310(01)00334-9

  5. Di Marco, P. and Grassi, W., Pool boiling in microgravity: assessed results and open issues.

  6. Esmaeeli, A. and Tryggvason, G., Computations of explosive boiling in microgravity.

  7. Fritz, W., Berechnung des Maximalvolumens von Dampfblasen.

  8. Fuchs, T., Kern, J., and Stephan, P., A transient nucleate boiling model including microscale effects and wall heat transfer. DOI: 10.1115/1.2349502

  9. Golobic, I., Petkovsek, J., Baselj, M., Papez, A., and Kenning, D. B. R., Experimental determination of transient wall temperature distribution close to growing vapor bubbles. DOI: 10.1007/s00231-007-0295-y

  10. Kim, J., Benton, J. F., and Wisniewski, D., Pool boiling heat transfer on small heaters: Effect of gravity and subcooling. DOI: 10.1016/S0017-9310(02)00108-4

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  14. Reid, R. C., Rapid phase transitions from liquid to vapor. DOI: 10.1016/S0065-2377(08)60252-5

  15. Sodtke, C., Kern, J., Schweizer, N., and Stephan, P., High resolution measurements of wall temperature distribution underneath a single vapour bubble under low gravity conditions. DOI: 10.1016/j.ijheatmasstransfer.2005.07.054

  16. Stephan, P. and Hammer, J., A new model for nucleate boiling heat transfer.

  17. Stoica, V. and Stephan, P., Phase shift interferometry for accurate temperature measurement around a vapor bubble. DOI: 10.1080/08916150701229881

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  20. Wagner, E., Sodtke, C., Schweizer, N., and Stephan, P., Experimental study of nucleate boiling heat transfer under low gravity conditions using TLCs for high resolution temperature measurements. DOI: 10.1007/s00231-006-0146-2

  21. Wagner, E., Stephan, P., Koeppen, O., and Auracher, H., High resolution temperature measurements at moving vapor/liquid and vapor/liquid/solid interfaces during bubble growth in nucleate boiling.

  22. Wagner, E., Hochauflosende Messungen beim Blasensieden von Reinstoffen und binaren Gemischen.


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