Vector Extrapolation for Strong Coupling Fluid-Structure Interaction Solvers

2009 ◽  
Vol 76 (2) ◽  
Author(s):  
Ulrich Küttler ◽  
Wolfgang A. Wall
Keyword(s):  
Strong Coupling ◽  
Fluid Structure Interaction ◽  
General Purpose ◽  
Extrapolation Methods ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Nonlinear Solver ◽  
Vector Extrapolation ◽  
Vector Extrapolation Methods ◽  
Matrix Free

Fluid-structure interaction (FSI) solvers based on vector extrapolation methods are discussed. The FSI solver framework builds on a Dirichlet–Neumann partitioning between general purpose fluid and structural solver. For strong coupling of the two fields vector extrapolation methods are employed to obtain a matrix free nonlinear solver. The emphasis of this presentation is on the embedding of well known vector extrapolation methods in a popular FSI solver framework and, in particular, the relation of these vector extrapolation methods to established fixed-point FSI schemes.

Strong coupling for fluid structure interaction problems

2007 ◽  
Vol 16 (3-4) ◽  
pp. 477-490
Author(s):  
Nicolas Capron ◽  
Gilmar Mompean ◽  
Hassan Naji
Keyword(s):  
Strong Coupling ◽  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction

scholarly journals Solving fluid-structure interaction problems using strong coupling algorithms with the component template library (CTL)

PAMM ◽  
2008 ◽  
Vol 8 (1) ◽  
pp. 10987-10988 ◽  
Author(s):  
Joachim Rang ◽  
Martin Krosche ◽  
R. Niekamp ◽  
Hermann G. Matthies
Keyword(s):  
Strong Coupling ◽  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Template Library ◽  
Coupling Algorithms

On a Partitioned Strong Coupling Algorithm for Modeling Fluid–Structure Interaction

2015 ◽  
Vol 07 (02) ◽  
pp. 1550021 ◽  
Author(s):  
Tao He
Keyword(s):  
Finite Element ◽  
Strong Coupling ◽  
Bluff Body ◽  
Stokes Equations ◽  
Fluid Structure Interaction ◽  
Structural Equations ◽  
Mass Source ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Coupling Algorithm

This paper presents a partitioned strong coupling algorithm for fluid–structure interaction in the arbitrary Lagrangian–Eulerian finite element framework. The incompressible Navier–Stokes equations are solved by the semi-implicit characteristic-based split (CBS) scheme while the structural equations are temporally advanced by the Bathe method. The celled-based smoothed finite element method is adopted for the solution of a geometrically nonlinear solid. To update the dynamic mesh, the moving submesh approach is performed in conjunction with the ortho-semi-torsional spring analogy method. A mass source term is implanted into the pressure Poisson equation to respect the geometric conservation law for the fractional-step-type CBS fluid solver. The iterative solution is achieved by fixed-point method with Aitken's Δ2 accelerator. The proposed methodology is validated against flow-induced oscillations of a bluff body and a flexible body. The overall numerical results agree well with the available data. Some important flow phenomena have been disclosed successfully.

Quasi-Eulerian Finite Element Formulation for Fluid-Structure Interaction

1980 ◽  
Vol 102 (1) ◽  
pp. 62-69 ◽  
Author(s):  
T. Belytschko ◽  
J. M. Kennedy ◽  
D. F. Schoeberle
Keyword(s):  
Finite Element ◽  
Interaction Analysis ◽  
Fluid Structure Interaction ◽  
General Purpose ◽  
Element Formulation ◽  
Finite Element Program ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Eulerian Formulation ◽  
Element Program

A quasi-Eulerian formulation is developed for fluid-structure interaction analysis in which the fluid nodes are allowed to move independent of the material thus facilitating the treatment of problems with large structural motions. The governing equations are presented in general form and then specialized to two-dimensional plane and axisymmetric geometries. These elements have been incorporated in a general purpose transient finite element program and results are presented for two problems and compared to experimental results.

Strongly Coupled Fluid-Structure Interaction Simulation of a 3D Printed Fan Rotor

2019 ◽  
Author(s):  
A. Castorrini ◽  
V. F. Barnabei ◽  
A. Corsini ◽  
F. Rispoli
Keyword(s):  
Additive Manufacturing ◽  
Strong Coupling ◽  
Equations Of Motion ◽  
Fluid Structure Interaction ◽  
Elastic Solid ◽  
Small Sample ◽  
Fluid Structure ◽  
Engineering Research ◽  
Structure Interaction ◽  
Ale Formulation

Abstract Additive manufacturing represents a new frontier in the design and production of rotor machines. This technology drives the engineering research framework to new possibilities of design and testing of new prototypes, reducing costs and time. On the other hand, the fast additive manufacturing implies the use of plastic and light materials (as PLA or ABS), often including a certain level of anisotropy due to the layered deposition. These two aspects are critical, because the aero-elastic coupling and flow induced vibrations are not negligible for high aspect ratio rotors. In this work, we investigate the aeroelastic response of a small sample fan blade, printed using PLA material. Scope of the work is to study both the structure and flow field dynamics, where strong coupling is considered on the simulation. We test the blade in two operating points, to see the aero-mechanical dynamics of the system in stall and normal operating condition. The computational fluid-structure interaction (FSI) technique is applied to simulate the coupled dynamics. The FSI solver is developed on the base of the finite element stabilized formulations proposed by Tezduyar et al. We use the ALE formulation of RBVMS-SUPS equations for the aerodynamics, the non-linear elasticity is solved with the Updated Lagrangian formulation of the equations of motion for the elastic solid. The strong coupling is made with a block-iterative algorithm, including the Jacobian based stiffness method for the mesh motion.

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