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

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.v29.i1-3.190
pages 190-195

Heat Transfer and Long-Wave Instabilities During Condensation on a Cylindrical Tube in Zero Gravity

Vladimir S. Ajaev
Kutateladze Institute of Thermophysics SB RAS, 1, Lavrentiev Ave, Novosibirsk, 630090, Russia; Department of Mathematics, Southern Methodist University, Dallas TX 75275, USA
Sergey G. Cherkasov
Keldysh Research Center, Russian Space Agency Moscow, Russia


Heat transfer during condensation of a saturated vapor on a cylindrical tube in zero gravity is considered in connection with the development of cooling sys¬tems for cryogenic fuel tanks. A simple quasi-steady model of the process with a fixed interface temperature was developed earlier (Ajaev & Cherkasov, 1995). In the present study we consider a more general heat exchange model which takes into account unsteady effects, vapor recoil and thermocapillarity. The problem-is reduced to a single evolution equation, which provides a self-consistent descrip¬tion of the long-wave instabilities and their influence on the heat exchange in the system. It is proved analytically that the instabilities can be suppressed if the film thickness is smaller than a certain critical value. We also study the dependence of this critical thickness on different physical parameters. It is shown that the mass flux through the interface and thermocapillary tend to stabilize the film, but vapor recoil has a destabilizing effect.