The VOF Method Applied To The Numerical
Simulation Of A 2D Liquid Jet Under Gravity
Author(s)
G. Rocco, G. Coppola & L. de Luca
Abstract
Numerical simulations of a two-dimensional gravitational liquid sheet injected in
another immiscible fluid are performed. The steady state of the liquid sheet has
been calculated by solving the two-dimensional Navier-Stokes equations for
variable density incompressible flows and the interface between the two fluids
has been determined by using the Volume of Fluids method . The analysis takes
into account viscous, inertial, gravitational and surface tension forces and
different regimes of motion are identified according to the values of Reynolds
and Stokes numbers. Velocity, pressure and shape of the sheet are investigated
and the results are in well agreement with previous numerical and experimental
results.
Keywords: VOF method, liquid jet, die-swell effect.
1 Introduction
The numerical simulation of free surface flows represents a very hard challenge
due to the complex physical phenomena involved in the liquid-gas or liquidliquid
interface dynamics, such as changes in topology (coalescence, break-up),
instability, surface tension effects. A variety of engineering applications,
concerning atomization, drops impact and liquid jets dynamics have motivated
much research on this topic.
In particular, laminar liquid jets injected from a rectangular slot (liquid
sheets) in an immiscible fluid have been studied extensively in the last years.
Keywords
VOF method, liquid jet, die-swell effect
Related Book
Other papers in this volume
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