Self-Similar Solution to the Problem of Unsteady Film Condensation on a Vertical Semi-Infinite Plate

Changes in the regimes of condensate film flow along the underlying surface in the presence of a body force are considered within the framework of a simplified physical and mathematical model of hydrodynamic and thermal processes occurring under unsteady film condensation on a vertical semi-infinite...

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Bibliographic Details
Published in:Fluid dynamics 2023-12, Vol.58 (6), p.1014-1024
Main Authors: Kuroedov, A. A., Laptev, I. V., Suvorov, A. V., Cherkasov, S. G.
Format: Article
Language:English
Subjects:
Approximation
Classical and Continuum Physics
Classical Mechanics
Condensate films
Engineering Fluid Dynamics
Film condensation
Film thickness
Fluid- and Aerodynamics
Mathematical analysis
Mathematical models
Physics
Physics and Astronomy
Self-similarity
Weightlessness
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Summary:Changes in the regimes of condensate film flow along the underlying surface in the presence of a body force are considered within the framework of a simplified physical and mathematical model of hydrodynamic and thermal processes occurring under unsteady film condensation on a vertical semi-infinite plate. The model is used to determine the applicability conditions of the zero-gravity approximation when considering film condensation. It is found that the validity of using the zero-gravity approximation to calculate the film thickness growth rate on any plate section depends not only on the magnitude of the body force, but also on time and distance between this section and the leading edge of the plate.
ISSN:0015-4628
1573-8507
DOI:10.1134/S001546282360195X