Simulation of water entry and exit of a circular cylinder using the isph method

Bašić, Josip and Degiuli, Nastia and Werner, Andreja (2014) Simulation of water entry and exit of a circular cylinder using the isph method. = Simulation of water entry and exit of a circular cylinder using the isph method. Transactions of FAMENA, 38 (1). pp. 45-62. ISSN 1333-1124. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q4 (2013). Točan broj autora: 3.

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Abstract

Simulations of free surface flows, as well as flows with moving boundaries in general,are quite difficult to describe with the classic, mesh-based Eulerian methods, such as finitedifference, finite volume, and finite element methods. Meshless Lagrangian methods or acombination of Eulerian-Lagrangian methods that have the ability to describe the free surfacewith large deformations have been developing in the past fifteen years. In this paper, theLagrangian incompressible smoothed particle hydrodynamics (ISPH) method for simulatingthe dynamics of an incompressible viscous fluid flow is presented. The ISPH method is anattractive choice for the simulation of incompressible fluid flow because it is based on thesimple SPH formulations, and it solves the pressure field implicitly using the projectionscheme of solving the Navier-Stokes equations. A computer code for the simulation of theviscous incompressible fluid flow based on the ISPH method is developed. Water entry andwater exit of a rigid body are very important phenomena in marine hydrodynamics and therehave been many studies and experiments on the topic. The cases of two-dimensional waterentry and water exit of a circular cylinder at a forced constant velocity were studied in orderto verify and validate the method. Numerical simulations of a rigid circular cylinder fallingonto initially calm water at a constant entry velocity were carried out. Also numericalsimulation of the water exit of a circular cylinder, initially fully immersed, was performed.The obtained numerical results are in good agreement with the experimental and analyticalones found in the literature.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): Circular cylinder; Free surface; Incompressible smoothed particle hydrodynamics (ISPH) method; Water entry; Water exit
Subjects: TECHNICAL SCIENCE > Shipbuilding
TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 600 Department of Naval Engineering and Marine Technology > 610 Chair of Hydromechanics of Marine Structures
Indexed in Web of Science: Yes
Indexed in Current Contents: No
Citations JCR: 2 (29.09.2017.)
Quartiles: Q4 (2013)
Citations SCOPUS: 3 (29.09.2017.)
Date Deposited: 20 May 2015 13:01
Last Modified: 29 Sep 2017 11:01
URI: http://repozitorij.fsb.hr/id/eprint/4324

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