Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Heat Transfer Research
Impact-faktor: 0.404 5-jähriger Impact-Faktor: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Druckformat: 1064-2285
ISSN Online: 2162-6561

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

Heat Transfer Research

DOI: 10.1615/HeatTransRes.v38.i7.50
pages 621-633

Study of the Dynamics of Flow and Heat Transfer in Draining Intensely Evaporated Wave Films of Liquid

Aleksandr N. Pavlenko
Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
A. M. Matsekh
S. S. Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
A. V. Morozov
S. S. Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation

ABSTRAKT

The dynamics of flow and heat transfer in gravity flow of wave films of cryogenic liquid over vertical heated surfaces under the conditions of evaporation and boiling have been studied experimentally. The studies have been conducted on heated surfaces with the length along the flow of 12, 20, 42, and 64 mm within the variation range of the Reynolds number at the inlet of 10−2000. The work has showed different dynamics in the development of crisis phenomena during film boiling, depending on the length of the heated surface. It has been shown that on short thick-wall heaters the drying of the heat-release surface is related to complete rejection of the developed liquid jets directly at the inlet to the heat-release zone. It is found that on heat-release surfaces, which have greater length along the flow, a variety of the crisis develops that is conditioned by propagation of the temperature perturbation upstream in the heat-transfer wall. Generalization of the obtained experimental data shows that under the conditions of development of the given type of heat-transfer crisis the critical heat flux can be substantially lower than the one calculated by the known hydrodynamic models of its description. At the parameters of the heat-transfer wall implemented in the experiments, an autowave transition develops; this transition is characterized by displacement of the nucleate-boiling zone by the front of drying when a critical size of "dry" spots in the lower part of the heat-release surface has been reached.


Articles with similar content:

Propagation Dynamics of Self-Sustained Evaporation Front and Characteristics of Small-Scale Perturbations at the Interface
International Heat Transfer Conference 15, Vol.15, 2014, issue
Mikhail I. Moiseev, Vladimir Egorovich Zhukov, Aleksandr N. Pavlenko, Denis V. Kuznetsov
PRESSURE EFFECTS ON BUBBLE GROWTH IN THE FLASHING OF SUPERHEATED WATER
International Heat Transfer Conference 4, Vol.23, 1970, issue
G. Faucher , A. Eidlitz , F.C. Hooper
On the heat and mass tranfer with liquid-vapor phase change in capillary porous media. Application to capillary evaporators
International Heat Transfer Conference 12, Vol.26, 2002, issue
B. Camassel, Marc Miscevic, Marc Prat, Claude Butto
SUSTAINABILITY OF OSCILLATIONS IN A SIMPLEST PULSATING HEAT PIPE (PHP)
Multiphase Science and Technology, Vol.30, 2018, issue 2-3
Shyama Prasad Das, Utsav Bhardwaj
Traveling Waves and Nonuniform Steady States in Boiling
Heat Transfer Research, Vol.29, 1998, issue 1-3
S. A. Zhukov