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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2014, Volume 55, Issue 5, Pages 115–125 (Mi pmtf1032)  

Emission of dimers from a free surface of heated water

A. A. Bochkarev, V. I. Polyakova

S.S. Kutateladze Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
Abstract: The emission rate of water dimers from a free surface and a wetted solid surface in various cases was calculated by a simplified Monte Carlo method with the use of the binding energy of water molecules. The binding energy of water molecules obtained numerically assuming equilibrium between the free surface of water and vapor in the temperature range of 298–438 K corresponds to the coordination number for liquid water equal to 4.956 and is close to the reference value. The calculation results show that as the water temperature increases, the free surface of water and the wetted solid surface become sources of free water dimers. At a temperature of 438 K, the proportion of dimers in the total flow of water molecules on its surface reaches 1%. It is found that in the film boiling mode, the emission rate of dimers decreases with decreasing saturation vapor. Two mechanisms of the emission are described.
Keywords: Langmuir adsorption model, sorption of water vapor, emission of dimers, multilayer adsorption, condensation, film boiling.
Received: 06.08.2013
Revised: 09.10.2013
English version:
Journal of Applied Mechanics and Technical Physics, 2014, Volume 55, Issue 5, Pages 826–834
DOI: https://doi.org/10.1134/S0021894414050125
Bibliographic databases:
Document Type: Article
UDC: 538.971:538.975
Language: Russian
Citation: A. A. Bochkarev, V. I. Polyakova, “Emission of dimers from a free surface of heated water”, Prikl. Mekh. Tekh. Fiz., 55:5 (2014), 115–125; J. Appl. Mech. Tech. Phys., 55:5 (2014), 826–834
Citation in format AMSBIB
\Bibitem{BocPol14}
\by A.~A.~Bochkarev, V.~I.~Polyakova
\paper Emission of dimers from a free surface of heated water
\jour Prikl. Mekh. Tekh. Fiz.
\yr 2014
\vol 55
\issue 5
\pages 115--125
\mathnet{http://mi.mathnet.ru/pmtf1032}
\elib{https://elibrary.ru/item.asp?id=22318113}
\transl
\jour J. Appl. Mech. Tech. Phys.
\yr 2014
\vol 55
\issue 5
\pages 826--834
\crossref{https://doi.org/10.1134/S0021894414050125}
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