2010 2(4)

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   Short abstract

 

Pages:

78 - 83

Language:

RU

Ref.:

15


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2010_2(4)_16.pdf

 

 

GENERATION OF RIPPLE WAVES BY DISTURBANCE WAVES IN ANNULAR FLOW

Markovich D.M.1,2, Kharlamov S.M.1, Cherdantsev A.V.1,2, Cherdantsev M.V.1

1 Institute of Thermophysics SB RAS, Novosibirsk, Russia
2 Novosibirsk State University, Novosibirsk, Russia


Citation:

Markovich, D.M., Kharlamov, S.M., Cherdantsev, A.V. and Cherdantsev, M.V., (2010) Generation of ripple waves by disturbance waves in annular flow, Modern Science: Researches, Ideas, Results, Technologies, Iss. #2(4), PP. 78 - 83.


Keywords:

dispersed annular flow; ripple waves; disturbance waves; laser induced fluorescence


Abstracts:

The present work is dedicated to investigation of the wavy structure of liquid film in annular flow using laser induced fluorescence method (LIF). The most part of researchers who investigated annular flow used methods with spatial resolution not sufficient to investigate small scale waves (ripples) on the film surface. 2D- and 3D- investigations of wavy liquid film have been completed with spatial resolution 0.1 mm*0.5 ms and 0.1 mm*0.1 mm*2 ms respectively. It was observed that ripple waves can move either faster or slower than disturbance waves. It was observed that appearance of ripple waves occurs due to instability of rear side of disturbance waves and relative position of the area of ripples generation on disturbance wave doesn’t depend on gas velocity. The area of fast ripples generation lays closer to the front side of disturbance wave. Three-dimensional wave pictures for annular flow have been obtained. Understanding of three-dimensional nature of ripples waves has been extended.


References:

  1. Alekseenko S.V., Antipin V.A., Cherdantsev A.V., Kharlamov S.M. and Markovich D.M. Investigation of waves interaction in annular gas-liquid flow using high-speed fluorescent visualization technique // Microgravity - Sci. Technol. - 2008. - vol. 20. - P. 271-275.

  2. Andreussi P., Asali J.C., Hanratty T.J. Initiation of roll-waves in gas-liquid flow. // AIChE Journal. - 1985. - V. 31. - № 1. - P. 119-126.

  3. Azzopardi B.J. Drops in annular two-phase flow // Int.J. Multiphase Flow - 1997. - vol. 23. - P. 1-53.

  4. Azzopardi B.J., Whalley P.B. Artificial waves in annular two-phase flow. // ASME Winter Annual Meeting, Chicago, published in Basic Mechanisms in Two-Phase Flow and Heat Transfer. - 1980. - P. 1 - 8.

  5. Belt R.J., Van't Westende J.M.C., Prasser H.M., Portela L.M. Time and spatially resolved measurements of interfacial waves in vertical annular flow // Int. Journal of Multiphase Flow. - 2010. - vol.36. - P. 570 - 587.

  6. Chu K.J., Dukler A.E. Statistical characteristic of thin, wavy film III. Structure of large waves and their resistance to gas flow. // AIChE journal. - 1975. - vol.21. - No. 3. - P. 583 - 593.

  7. Damson, Prasser High-speed liquid film sensor for two-phase flows with high spatial resolutionbased on electrical conductance // Flow Measurement and Instrumentation. - 2009. - Vol. 20 - P. 1 - 14.

  8. Han H., Zhu Z., Gabriel K. A study on the effect of gas flow rate on the wave characteristics in two-phase gas-liquid annular flow // Nuclear Engineering and Design. -2006. - Vol. 236. - P. 2580 - 2588.

  9. Hewitt G.F., Hall-Taylor N.S.. Annular two-phase flow. - Pergamon press, Oxford, 1970.

  10. Hewitt G.F., Lovergrove P.C.. Frequency and velocity measurements of disturbance waves in annular two-phase flow. - UKAEA Report AERE R4304, 1969

  11. Kharlamov, S., Guzanov, V., Crey, D. On applicability of LIF method for field measurement of local thickness of liquid films. // In: Book of abstracts of the international topical team workshop two-phase systems for ground and space applications. - Brussels, Belgium, 2006. - P. 100 - 101.

  12. Martin C.J., Azzopardi B.J. Waves in vertical annular flow. // Physico-Chemical Hydrodynamics. - 1985. - Vol. 6. - N 1-2, pp. 257 - 265.

  13. Sekoguchi K., Takeishi M., Ishimatsu T. Interfacial structure in vertical upward annular flow. // Physico-Chemical Hydrodynamics. - 1985. - Vol. 6. - N 1-2, P. 239 - 255.

  14. Wang Z, Gabriel K., Manz D. The influences of wave height on the interfacial friction in annular gas-liquid flow under normal and microgravity conditions // Int. Journal of Multiphase Flow. - 2004. - Vol. 30. - P.1193 - 1211.

  15. Woodmansee D.E. and Hanratty T.J.. Mechanism for the removal of droplets from a liquid surface by a parallel air flow // Chem. Engng. Sci. - 1969. - Vol. 24. - P. 299 - 307.

 

 
     

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