scholarly journals A Parallel Partitioned Approach On Fluid-Structure Interaction Simulations Using the Multiscale Universal Interface Coupling Library

2021 ◽  
Author(s):  
W. Liu ◽  
W. Wang ◽  
A. Skillen ◽  
S. Longshaw ◽  
C. Moulinec ◽  
...  
Keyword(s):  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Multi Scale ◽  
Interface Coupling ◽  
Partitioned Approach ◽  
Universal Interface

Cardiovascular fluid-structure interaction: A partitioned approach utilizing the p -FEM

PAMM ◽  
2014 ◽  
Vol 14 (1) ◽  
pp. 493-494 ◽  
Author(s):  
Lars Radtke ◽  
Axel Larena-Avellaneda ◽  
Tilo Kölbel ◽  
Eike Sebastian Debus ◽  
Alexander Düster
Keyword(s):  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Partitioned Approach

scholarly journals Numerical Stability of Partitioned Approach in Fluid-Structure Interaction for a Deformable Thin-Walled Vessel

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Kelvin K. L. Wong ◽  
Pongpat Thavornpattanapong ◽  
Sherman C. P. Cheung ◽  
Jiyuan Tu
Keyword(s):  
Fluid Structure Interaction ◽  
Time Integration ◽  
Computational Time ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Integration Schemes ◽  
Partitioned Approach ◽  
Time Integration Schemes ◽  
Implicit Approach ◽  
The Stability

Added-mass instability is known to be an important issue in the partitioned approach for fluid-structure interaction (FSI) solvers. Despite the implementation of the implicit approach, convergence of solution can be difficult to achieve. Relaxation may be applied to improve this implicitness of the partitioned algorithm, but this commonly leads to a significant increase in computational time. This is because the critical relaxation factor that allows stability of the coupling tends to be impractically small. In this study, a mathematical analysis for optimizing numerical performance based on different time integration schemes that pertain to both the fluid and solid accelerations is presented. The aim is to determine the most efficient configuration for the FSI architecture. Both theoretical and numerical results suggest that the choice of time integration schemes has a significant influence on the stability of FSI coupling. This concludes that, in addition to material and its geometric properties, the choice of time integration schemes is important in determining the stability of the numerical computation. A proper selection of the associated parameters can improve performance considerably by influencing the condition of coupling stability.

scholarly journals A Monolithic and a Partitioned, Reduced Basis Method for Fluid–Structure Interaction Problems

Fluids ◽  
2021 ◽  
Vol 6 (6) ◽  
pp. 229
Author(s):  
Monica Nonino ◽  
Francesco Ballarin ◽  
Gianluigi Rozza
Keyword(s):  
Reynolds Number ◽  
Fluid Structure Interaction ◽  
Reduction Technique ◽  
Reduced Basis Method ◽  
Test Case ◽  
Reduced Basis ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Partitioned Approach ◽  
Basis Method

The aim of this work is to present an overview about the combination of the Reduced Basis Method (RBM) with two different approaches for Fluid–Structure Interaction (FSI) problems, namely a monolithic and a partitioned approach. We provide the details of implementation of two reduction procedures, and we then apply them to the same test case of interest. We first implement a reduction technique that is based on a monolithic procedure where we solve the fluid and the solid problems all at once. We then present another reduction technique that is based on a partitioned (or segregated) procedure: the fluid and the solid problems are solved separately and then coupled using a fixed point strategy. The toy problem that we consider is based on the Turek–Hron benchmark test case, with a fluid Reynolds number Re=100.

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