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WATER ENTRY AND EXIT OF HORIZONTAL CYLINDER IN FREE SURFACE FLOW

DOI: 10.1615/ICHMT.2009.CONV.940
8 pages

Zouhaier Hafsia
Laboratoire d’Hydraulique/ ENIT. B.P. 37. Le Belvédère, 1002 Tunis, Tunisia

Chokri Mnasri
Laboratoire de Mécanique des Fluides, Faculté des Sciences de Tunis, Campus Universitaire Tunis El Manar 2083, Tunisia

Omri Mohamed
Institut National des Sciences Appliquées et de Technolgie de Tunis, Tunisia

Khlifa Maalel
Laboratoire d’Hydraulique/ ENIT. B.P. 37. Le Belvédére, 1002 Tunis, Tunisia

Résumé

This paper describes two-dimensional numerical simulations of the water entry and exit of horizontal circular cylinder at constant velocity. The deformation of free surface is described by Navier-Stokes (NS) equations of incompressible and viscous fluid with additional transport equation of the volume-of-fluid (VOF). The motion of the cylinder is modeled by the associated momentum source term implemented in the PHOENICS (Parabolic Hyperbolic Or Elliptic Numerical Integration Code Series) code. The domain is discretized by a fixed Cartesian grid using a finite volume method and the cylinder is represented and cut cell method. The simulated results are compared with the numerical results of Lin (2007). This comparison shows good agreement in terms of free surface evolution for water exit and sinking. However, for water entry, the jet flow simulated by Lin is not reproduced. The free surface deformation around the cylinder in downward direction is accurately predicted.

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