Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Heat Transfer Research
Facteur d'impact: 0.404 Facteur d'impact sur 5 ans: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

Volumes:
Volume 51, 2020 Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.v38.i5.60
pages 449-460

Study of Special Features of Development and Collapse of Vapor Film on Hemispherical Surfaces

V. S. Grigoriev
Institute of High Temperatures, Russian Academy of Sciences, Moscow, Russia
Vyacheslav G. Zhilin
Incorporated Institute of High Temperatures (IIHI) of the Russian Academy of Science, 13/19 Igorskaya str., Moscow, Russia
Yuri Albertovich Zeigarnik
Joint Institute for High Temperatures, Russian Academy of Sciences, str. Izhorskaya 13, bld. 2, Moscow, 125412, Russia
Yurii P. Ivochkin
Moscow Power Engineering Institute; and Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia
K. G. Kubrikov
Institute of High Temperatures, Russian Academy of Sciences, Moscow, Russia

RÉSUMÉ

Local processes, taking place during a change of the boiling regime on a hot hemispherical surface, have been studied. The experiments have been performed at atmospheric pressure and the initial temperatures of the heated surface and the cooling water equal to 600−1000 K and 288−368 K, respectively. Hemispheres made of stainless steel and copper were used in the experiments. It has been established that the process of film collapse is extremely diversified and greatly depends on the state and thermophysical properties of the surface. It includes both a smooth change of film boiling and an explosive collapse of the vapor film with discharge of jets. The latter regime was observed only on oxide-coated surfaces. Oxidic film thicknesses have been experimentally evaluated. It has been demonstrated that, at an explosive collapse of the vapor film, the rate of cooling of the hemisphere amounted to ∼300 deg/sec; at that, the heat flux density exceeded 10 W/m2 . The fluctuation behavior of the volume of hemispherical vapor cavity has been found. The boundaries of its existence and variation ranges of characteristic parameters have been determined.


Articles with similar content:

Vapour Film Collapse Characteristics on Specimens Undergoing Forced Convection Film Boiling
International Heat Transfer Conference 12, Vol.41, 2002, issue
Brian P. Axcell, Hussam I. Jouhara
THE MECHANISM OF HEAT AND MASS TRANSFER BETWEEN A WATER DROP AND A HEATED SURFACE
International Heat Transfer Conference 6, Vol.1, 1978, issue
M.E. Grigorieva, M. A. Styrikovich, Yu. V. Baryshev, G.V. Tsiklauri
High Speed Observation and Measurement of Surface Temperature and Surface Heat Flux During Impact of a Droplet on Hot Surface
International Heat Transfer Conference 15, Vol.28, 2014, issue
Mohammad Nasim Hasan, Yuichi Mitsutake, SUHAIMI ILLIAS, Masanori Monde
LOCAL HEAT TRANSFER COEFFICIENTS IN FILM BOILING OF LIQUID NITROGEN ON A VERTICAL SURFACE
International Heat Transfer Conference 5, Vol.6, 1974, issue
A. Ramachandran , Muralidhar V. Krishnamurthy, K. N. Seetharamu
STUDY OF SODIUM BOILING HEAT TRANSFER
International Heat Transfer Conference 3 , Vol.17, 1966, issue
S. A. Kovalev, B. S. Petukhov, Vladimir M. Zhukov