A fully Lagrangian formulation for fluid-structure interaction problems with free-surface flows and fracturing solids

2021 ◽  
Vol 250 ◽  
pp. 106532
Author(s):  
Alejandro Cornejo ◽  
Alessandro Franci ◽  
Francisco Zárate ◽  
Eugenio Oñate
Keyword(s):  
Free Surface ◽  
Fluid Structure Interaction ◽  
Free Surface Flows ◽  
Lagrangian Formulation ◽  
Surface Flows ◽  
Fluid Structure ◽  
Structure Interaction

Fluid-Structure Interaction Simulation With Free Surface Flows by Smoothed Particle Hydrodynamics

2008 ◽  
Author(s):  
M. H. Farahani ◽  
N. Amanifard ◽  
H. Asadi ◽  
M. Mahnama
Keyword(s):  
Free Surface ◽  
Fluid Structure Interaction ◽  
Free Surface Flows ◽  
Surface Flows ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Incompressibility Constraint ◽  
Sph Algorithm

Simulation of the fluid-structure interaction (FSI) and free surface flows includes an area of extremely challenging problems in the computational mechanics community. In this paper, a newly proposed SPH algorithm is employed to simulate FSI problems with complex free surface flows. In this way, fluid and elastic structure continua are coupled using a monolithic but explicit numerical scheme. The proposed method is similar to so-called SPH projection method and consists of three steps. The first two steps play the role of prediction, while in the third step a Poisson equation is used for both fluid and structure to impose incompressibility constraint.

scholarly journals Numerical simulation of fluid structure interaction in free-surface flows: the WEC case

2021 ◽  
Vol 2116 (1) ◽  
pp. 012122
Author(s):  
Eugenio Schillaci ◽  
Federico Favre ◽  
Peter Troch ◽  
Assensi Oliva
Keyword(s):  
Free Surface ◽  
Single Point ◽  
Fluid Structure Interaction ◽  
Free Surface Flows ◽  
Immersed Boundary ◽  
Phase Method ◽  
Surface Flows ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Linear Waves

Abstract In this work we present a numerical framework to carry-out numerical simulations of fluid-structure interaction phenomena in free-surface flows. The framework employs a single-phase method to solve momentum equations and interface advection without solving the gas phase, an immersed boundary method (IBM) to represent the moving solid within the fluid matrix and a fluid structure interaction (FSI) algorithm to couple liquid and solid phases. The method is employed to study the case of a single point wave energy converter (WEC) device, studying its free decay and its response to progressive linear waves.

scholarly journals Numerical Modeling of Fluid-Structure Interaction with Free Surface Flows

PAMM ◽  
2003 ◽  
Vol 3 (1) ◽  
pp. 412-413 ◽  
Author(s):  
Andreas Kölke ◽  
Elmar Walhorn ◽  
Björn Hübner ◽  
Dieter Dinkler
Keyword(s):  
Numerical Modeling ◽  
Free Surface ◽  
Fluid Structure Interaction ◽  
Free Surface Flows ◽  
Surface Flows ◽  
Fluid Structure ◽  
Structure Interaction

Fluid Structure Interaction Simulations Involving Free Surface

2018 ◽  
Author(s):  
H. R. Díaz-Ojeda ◽  
L. M. González ◽  
F. J. Huera-Huarte
Keyword(s):  
Free Surface ◽  
Circular Cylinder ◽  
Fluid Structure Interaction ◽  
Flexible Structure ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Classical Fluid ◽  
Simple Geometry ◽  
Different Depths

The aim of this paper is to evaluate how much affects the presence of gravity and free-surface to a flexible structure in a classical fluid structure interaction (FSI) problem typically found in off-shore problems and other oceanic applications. The base problem selected is the Turek benchmark case where a deformable plate is attached to the wake of a circular cylinder. To focus on the differences of considering free surface, a simple geometry has been selected and two different situations have been studied: the first one is the classical Turek benchmark, the second is a similar geometry but adding gravity and free surface. The free surface problem was studied placing the structure at different depths and monitoring the deformation and forces on the structure.

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