Heat and mass transfer during water film evaporation in a horizontal channel with a cocurrent flow of moist air

In this paper, we consider the issues of modeling of joint processes of heat and mass transfer during evaporative cooling of a laminar flow of moist air in a flat horizontal channel, taking into account the finite thickness of the water film. Numerical simulation of processes is based on solving the...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-11, Vol.1677 (1), p.12086
Main Authors: Gorbachev, M, Terekhov, V
Format: Article
Language:English
Subjects:
Aerodynamics
Atmospheric models
Computational fluid dynamics
Differential equations
Evaporative cooling
Fluid flow
Heat transfer
Humidity
Laminar flow
Mass transfer
Mathematical models
Parameters
Physics
Relative humidity
Reynolds number
Thickness
Two dimensional boundary layer
Water film
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Summary:In this paper, we consider the issues of modeling of joint processes of heat and mass transfer during evaporative cooling of a laminar flow of moist air in a flat horizontal channel, taking into account the finite thickness of the water film. Numerical simulation of processes is based on solving the system of differential equations in boundary layer approximation and in two-dimensional formulation. The research is conducted in the range of input parameters: temperature T0 = 10 ÷ 50 °C, relative humidity φ0 = 0 ÷ 100 %, and Reynolds number Re = 50 ÷ 1000 at atmospheric pressure. The influence of the Reynolds number and relative humidity on the change of local and average thermodynamic and thermohydraulic parameters of flows along the channel length is shown.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1677/1/012086