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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

Выпуски:
Том 46, 2019 Том 45, 2018 Том 44, 2017 Том 43, 2016 Том 42, 2015 Том 41, 2014 Том 40, 2013 Том 39, 2012 Том 38, 2011 Том 37, 2010 Том 36, 2009 Том 35, 2008 Том 34, 2007 Том 33, 2006 Том 32, 2005 Том 31, 2004 Том 30, 2003 Том 29, 2002 Том 28, 2001 Том 27, 2000 Том 26, 1999 Том 25, 1998 Том 24, 1997 Том 23, 1996 Том 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v25.i1-3.350
pages 400-407

Heat Transfer in Bubbly Liquids: Fundamentals and Waves

A. A. Gubaidullin
Tyumen’ Affiliate of the Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Tyumen’, Russia

Краткое описание

The theory of non-steady wave processes in two-phase gas-liquid media with bubble structure, including hierarchy structure of mathematical models of bubbly liquids dynamic behavior, has been developed. The models differ in the degree of accounting the effects of pressure, temperature and phase velocities non-coincidence in the process of dynamic deformation. Estimations of the influence of dynamic and heat interaction between gas and liquid on shock waves evolution have presented. The technique of the worked out models program realization has been proposed. All models have been realized on a computer. A considerable number of computational experiments has been carried out, resulting in defining the principal mechanisms determining shock waves evolution in bubbly liquids in a wide range of parameters. In particular, it has been shown that shock waves evolution in low-viscous liquids with bubble size about 1 mm is determined by heat dissipation resulting from non-equilibrium heat transfer between the gas in the bubbles and surrounding liquid. Thermophysics characteristics of the gas, insignificant in volume and still more insignificant in mass, play the decisive role on evolution and formation of oscillar and monotonous wave configuration. It has been discovered that at waves propagation there may be observed their amplification as a result of the presence of locative deformation inertia characteristics in the bubbly system. The mechanism and peculiarity of shock waves amplification have been studied. The analysis of other experimental data contained in literature has been carried out. The comparison of the calculated and experimental data has proved correctness of the worked-out theory.


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