ROLE OF THE DIFFUSION MECHANISM OF MASS-TRANSFER PROCESSES 
IN CONIC CAPILLARIES SUBMERGED IN A LIQUID

N. P. Migun,a A. I. Shnip,b and
L. E. Reuta

UDC 532.6

A study is made of one possible mechanism explaining the 
phenomenon of bilateral filling of dead-end conic capillaries submerged 
in a liquid: diffusion and recondensation of a liquid vapor from a 
meniscus with a small curvature to a meniscus with a larger curvature. 
A theory of this process has been constructed and the rate of growth 
of the near-vertex liquid column has been calculated based on this 
theory. A comparison with experiment shows that although the law of 
growth of the column predicted by the theory coincides with the experimental 
one, the numerical values of the rate are nearly two orders of magnitude 
lower. Conditions under which one can detect this mechanism experimentally 
are discussed.

aInstitute of Applied Physics, National Academy of Sciences of Belarus, 
Minsk, Belarus; bA. V. Luikov Heat and Mass Transfer Institute, National 
Academy of Sciences of Belarus, Minsk, Belarus. Translated from Inzhenerno
-Fizicheskii Zhurnal, Vol. 75, No. 6, pp. 137-144, November-December, 2002. 
Original article submitted April 18, 2002.

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