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Heat Transfer Research
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ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v33.i3-4.170
6 pages

Modelling of Unsteady Dynamic Processes in Channels with Heat Power Increase

B. G. Pokusaev
Siberian Power Engineering Institute, Siberian Branch of the Russian Academy of Sciences Irkutsk; and Moscow State University of Engineering Ecology, Staraya Basmannaya str. 21/4, Moscow, Russia
Sergey I. Lezhnin
Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Ak. Lavrenteva 1, Novosibirsk 630090, Russia; Novosibirsk State University, 1 Pirogova Street, Novosibirsk 630090, Russia
Nikolay A. Pribaturin
Kutateladze Institute of Thermophysics, Acad. Lavrentiev ave., 1, Novosibirsk, Russia; Nuclear Safety Institute, Novosibirsk Branch, Acad. Lavrentiev ave., 1, Novosibirsk, Russia
B. S. Zhakupov
Institute of Thermodynamics, Siberian Branch of the Russian Academy of Sciences Novosibirsk, Russia
E. S. Vasserman
Institute of Thermodynamics, Siberian Branch of the Russian Academy of Sciences Novosibirsk, Russia

SINOPSIS

Results of experimental and mathematical investigations of the bubble (slug) dynamics in a channel with consideration for the destruction of bubbles and formation of liquid droplets inside it are presented. Dynamics of a bubble consisting of a saturated vapor-liquid mixture is considered. The boundary of the "water hammer regime-oscillatory regime" transition is determined. In the case of high dynamic loads a "shock" condensation regime appears. Pressure pulses arising here exceed the incident wave amplitude by the order of magnitude, the slug is' destructed and heat and mass transfer processes are sharply enhanced.


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