2013 1(12)

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Pages:

322 - 328

Language:

RU

Ref.:

10


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2013_1(12)_58.pdf

 

 

DYNAMIC CHARACTERISTICS OF THE INTERFACE OF THE SELF-SUSTAINING EVAPORATION FRONT IN FREON-21

Zhukov V.E., Moiseev M.I.

Institute of Thermophysics SB RAS, Novosibirsk, Russia


Citation:

Zhukov, V.E. and Moiseev, M.I., (2013) Dynamic characteristics of the interface of the self-sustaining evaporation front in freon-21, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(12), PP. 322 - 328.


Keywords:

boiling; evaporation front; unsteady heat transfer; crysis phenomena; interface instability; experiment


Abstracts:

The paper presents the results of experimental research of the propagation dynamics of self-sustaining evaporation front at stepped heat release on a horizontal cylindrical surface in Freon-21 at free convection. The experimental data on propagation velocity and structure of evaporation fronts were obtained; the spectrum of interface pulsation was analyzed at different metastable characters of the thermal layer. It is shown that a significant change in working section roughness did not lead to a considerable change in the velocity of evaporation front propagation. The connection between frequency of the main harmonics of interface velocity pulsation and velocity of evaporation front propagation was determined. It is shown that the ratio of amplitude of the main harmonics of evaporation front velocity pulsation to the average front velocity decreases with a rise of front velocity in the range of up to 0.5 m/s. At higher velocities the ratio stays constant.


References:

  1. Okuyama K.,Takehara R., Iida Y., and Kim J. Pumping action by boiling propagation in a microchannel // Microscale Thermophys. Eng., 2005, vol. 9, no. 2, pp. 119-135.

  2. Huai X., Wang G., Jin R.,Yin T., and Zou Y. Microscopic explosive boiling induced by a pulsed-laser irradation // Heat Mass Transfer,2008, vol.45, pp. 117-126.

  3. Pavlenko A.N., Chekhovich V.Yu. Interconnection between dynamics of liquid boiling-up and heat transfer crisis for nonstationary heat release // Journal of Engineering Thermophysics, Vol.16, №3, 2007, pp.175-187.

  4. Pavlenko A.N., Surtaev A.S., Starodubtseva I.P., Volodin O.A., Chernyavskiy A.N., Tsoy A.N., Pyatkov A.S. Decay of falling wavy liquid films at nonstationary heat release // Proc. of 14-th Int. Heat Transfer Conf. (IHTC-14), Washington, USA, 8-13 August 2010, IHTC 2010-22174.

  5. Avksentyuk B.P. Non-equilibrium model of an evaporation front // Russian Journal of Engineering Thermophysics, 1995, vol. 5, pp. 1-8.

  6. Pavlenko A.N., Lel V.V. Model of self-maintaining evaporation front for superheated liquids // Proceedings of the Third Intern. Conf. on Multiphase Flow, ICMF-98, Lyon, France, June 8-12, no. 4. 3-5., Prod. By File M- www.filem.com.,1998, 10 p.

  7. Aktershev S.P., Ovchinnikov V.V. Model of stationary motion of multiphase surface in the layer of extremely heated liquid, // J. Appl. Mech. Tech. Phys., 2008,vol. 49, no.2, pp. 47-55.

  8. Pavlov P.A., Vinogradov V.E. Dinamics of vapor film formation upon rapid superheating of liquid // High Temperature, 2010, T. 48, № 5, pp 683-690.

  9. Pavlenko A.N., Zhukov V.E., Starodubtseva I.P (2011), "Propagation of self-sustained evaporation fronts at step-wise heat generation and crisis phenomena at pool boiling", Computational Thermal Sciences, Vol. 3, pp. 419-426.

  10. Жуков В.Е., Павленко А.Н., Суртаев А.С., Моисеев М.И. Динамика вскипания и кризисные явления при ступенчатом тепловыделении в условиях свободной конвекции во фреоне-21 // Труды Пятой Российской национальной конференции по теплообмену (РНКТ-5).- 25-29 октября 2010, Москва. - 2010. - Т. 4. - С. 84-87.

 

 
     

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