Ship motions using single-phase level set with dynamic overset grids

2007 ◽  
Vol 36 (9) ◽  
pp. 1415-1433 ◽  
Author(s):  
Pablo M. Carrica ◽  
Robert V. Wilson ◽  
Ralph W. Noack ◽  
Fred Stern
Keyword(s):  
Level Set ◽  
Single Phase ◽  
Ship Motions ◽  
Overset Grids ◽  
Dynamic Overset Grids

Simulation of Wave-Body Interaction Using a Single-Phase Level Set Function in the SWENSE Method

2013 ◽  
Author(s):  
Gabriel Reliquet ◽  
Aurélien Drouet ◽  
Pierre-Emmanuel Guillerm ◽  
Erwan Jacquin ◽  
Lionel Gentaz ◽  
...  
Keyword(s):  
Free Surface ◽  
Level Set Method ◽  
Level Set ◽  
Single Phase ◽  
Stokes Equations ◽  
Flow Theory ◽  
Navier Stokes ◽  
Navier Stokes Equations ◽  
Level Set Function ◽  
Set Function

The purpose of this paper is to present combination of the SWENSE (Spectral Wave Explicit Navier-Stokes Equations – [1]) method — an original method to treat fully nonlinear wave-body interactions — and a free surface RANSE (Reynolds Averaged Navier-Stokes Equations) solver using a single-phase Level Set method to capture the interface. The idea is to be able to simulate wave-body interactions under viscous flow theory with strong deformations of the interface (wave breaking in the vicinity of the body, green water on ship decks…), while keeping the advantages of the SWENSE scheme. The SWENSE approach is based on a physical decomposition by combining incident waves described by a nonlinear spectral scheme based on potential flow theory and an adapted Navier-Stokes solver where only the diffracted part of the flow is solved, incident flow parameters seen as forcing terms. In the single-phase Level Set method [2, 3], the air phase is neglected. Thus, only the liquid phase is solved considering a fluid with uniform properties. The location of the free surface is determined by a Level Set function initialised as the signed distance. The accuracy of simulation depends essentially on the pressure scheme used to impose free surface dynamic boundary condition. Comparisons of numerical results with experimental and numerical data for US navy combatant DTMB 5415 in calm water and in head waves are presented.

Turn and zigzag maneuvers of a surface combatant using a URANS approach with dynamic overset grids

2012 ◽  
Vol 18 (2) ◽  
pp. 166-181 ◽  
Author(s):  
Pablo M. Carrica ◽  
Farzad Ismail ◽  
Mark Hyman ◽  
Shanti Bhushan ◽  
Frederick Stern
Keyword(s):  
Overset Grids ◽  
Dynamic Overset Grids ◽  
Surface Combatant

scholarly journals A level-set aided single-phase model for the numerical simulation of free-surface flow on unstructured meshes

2016 ◽  
Vol 140 ◽  
pp. 97-110 ◽  
Author(s):  
Eugenio Schillaci ◽  
Lluís Jofre ◽  
Néstor Balcázar ◽  
Oriol Lehmkuhl ◽  
Assensi Oliva
Keyword(s):  
Numerical Simulation ◽  
Free Surface ◽  
Level Set ◽  
Single Phase ◽  
Free Surface Flow ◽  
Unstructured Meshes ◽  
Surface Flow ◽  
Phase Model
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