文档介绍：8
Mass Transfer in Two-Phase Gas-Liquid Flow
in a Tube and in Channels of
Complex Configuration
Nikolay Pecherkin and Vladimir Chekhovich
Kutateladze Institute of Thermophysics, SB RAS
Russia
1. Introduction
essive and versatile investigation of heat and mass transfer in two-phase flows is
caused by their wide application in power engineering, cryogenics, chemical engineering,
and aerospace industry, etc. Development of new technologies, upgrading of the methods
bined transport of oil and gas, and improvement of operation efficiency and
reliability of conventional and new apparatuses for heat and electricity production require
new quantitative information about the processes of heat and mass transfer in these
systems. At the same time necessity for the theory or universal prediction methods for heat
and mass transfer in the two-phase systems is obvious.
In some cases the methods based on analogy between heat and mass transfer and
momentum transfer are used to describe the mechanism of heat and mass transfer. These
studies were initiated by Kutateladze, Kruzhilin, Labuntsov, Styrikovich, Hewitt,
Butterworth, Dukler, et al. However, there are no direct experimental evidences in literature
that analogy between heat and mass transfer and momentum transfer in two-phase flows
exists. The main problem in the development of this approach is plexity of direct
measurement of the wall shear stress for most flows in two-phase system. The ess of the
analogy for heat and momentum transfer was achieved in the prediction of heat transfer in
annular gas-liquid flow, when the wall shear stress is close to the shear stress at the interface
between gas core and liquid film.
Following investigation of possible application of analogy between heat and mass transfer
and hydraulic resistance for calculations in two-phase flows is interesting from the points of
science and practice.
The current study deals with experimental inve