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Heat Transfer Research
Импакт фактор: 0.404 5-летний Импакт фактор: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

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

Heat Transfer Research

DOI: 10.1615/HeatTransRes.v41.i4.90
pages 479-491

Investigation of Nonstationary Heat Transfer in Boiling of Freon 113 on Dimpled Spherical and Cylindrical Surfaces under the Conditions of Free Convection

Vladimir M. Zhukov
Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia
Yury A. Kuzma-Kichta
Moscow Power Engineering Institute Moscow, Russia
A. M. Agal'tsov
Moscow Power Engineering Institute (Technical University), 14 Krasnokazarmennaya Str., Moscow, 111250, Russia

Краткое описание

An experimental investigation of nonstationary heat transfer in boiling of Freon 113 on dimpled spherical and vertical cylindrical surfaces with free convection in a wide range of temperature differences is carried out. The influence of dimples on an increase in the heat transfer rate in the film and transient regimes of the boiling of liquids, as well as film boiling crisis have been revealed. With the aid of a high-speed video-filming the existence of the phases of nonlinear waves with time-varying amplitudes whose values are commensurable with the average thickness of the vapor film or exceed it has been revealed. The amplitude of these waves increased in motion of the vapor film to the sphere vertex and attained an order of 0.7 mm. In experiments with subcooling, secondary flows were observed near the interface due to the transfer of heat from the vapor-liquid interface.


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