Comparison Of Numerical Schemes For
Computational Simulation Of Liquid Wavy Film
Flow On Vertical Wall
Author(s)
J. K. Min & I. S. Park
Abstract
Film flows are classified into no-wavy laminar, wavy laminar and turbulence
along the Reynolds number or the flow stability. Since the wavy motions of the
film flows are so intricate and nonlinear, the studies have largely been dependent
upon the experimental way. The numerical approaches have been limited on the
no-wavy flow regime. In this study, the film’s full wavy motion is numerically
investigated. The present numerical approach is based on the VOF interface
capturing methods. The implicit and explicit schemes for the interface time
marching are compared with each other. The HRIC (High Resolution Interface
Capturing) and the geometry reconstruction method are tested as the treatment of
convective terms at the liquid-air interface. The dependency of the grid density
and the time step size are investigated in the aspect of the probability density
function of the film thickness. All results are compared with Takamasa’s
experimental results.
Keywords: wavy film flow, free surface, VOF.
1 Introduction
The film flows are generally applied to the phase-change heat transfer
(condensation or evaporation) because of their advantages for heat transfer like
the high latent heat, the thin film thickness and the large heat transfer area.
Keywords
wavy film flow, free surface, VOF
Related Book
Other papers in this volume
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