Numerical Analysis of Constrained Dynamical Systems, with Applications to Dynamic Contact of Solids, Nonlinear Elastodynamics and Fluid-Structure Interactions

2000 ◽  
Author(s):  
Francisco Armero
Keyword(s):  
Numerical Analysis ◽  
Dynamical Systems ◽  
Dynamic Contact ◽  
Fluid Structure Interactions ◽  
Fluid Structure ◽  
Nonlinear Elastodynamics ◽  
Constrained Dynamical Systems

scholarly journals A Comparison of One-Way and Two-Way Coupling Methods for Numerical Analysis of Fluid-Structure Interactions

2011 ◽  
Vol 2011 ◽  
pp. 1-16 ◽  
Author(s):  
Friedrich-Karl Benra ◽  
Hans Josef Dohmen ◽  
Ji Pei ◽  
Sebastian Schuster ◽  
Bo Wan
Keyword(s):  
Numerical Analysis ◽  
Numerical Methods ◽  
Computational Effort ◽  
Complex Geometries ◽  
Fluid Structure Interactions ◽  
Solution Strategy ◽  
Fluid Structure ◽  
Coupling Methods ◽  
Wide Range ◽  
Engineering Problems

The interaction between fluid and structure occurs in a wide range of engineering problems. The solution for such problems is based on the relations of continuum mechanics and is mostly solved with numerical methods. It is a computational challenge to solve such problems because of the complex geometries, intricate physics of fluids, and complicated fluid-structure interactions. The way in which the interaction between fluid and solid is described gives the largest opportunity for reducing the computational effort. One possibility for reducing the computational effort of fluid-structure simulations is the use of one-way coupled simulations. In this paper, different problems are investigated with one-way and two-way coupled methods. After an explanation of the solution strategy for both models, a closer look at the differences between these methods will be provided, and it will be shown under what conditions a one-way coupling solution gives plausible results.

PDAE Formulation for Multi-Domain Dynamic Systems With Application to Fluid-Structure Interactions in Arterial Hemodynamics

2000 ◽  
Author(s):  
Danielle C. Tarraf ◽  
H. Harry Asada
Keyword(s):  
Dynamical Systems ◽  
Dynamic Systems ◽  
Systematic Approach ◽  
Well Posedness ◽  
Fluid Structure Interactions ◽  
Fluid Structure ◽  
Solution Approach ◽  
Arterial Hemodynamics ◽  
Consistent Initialization ◽  
Algebraic Constraints

Abstract A systematic approach to modeling coupled distributed dynamical systems by formulating them as partial differential equations and algebraic constraints (PDAEs) is presented. Several advantages of the PDAE formulation are listed and discussed. The challenges of ensuring well-posedness are also touched upon. The PDAE system is converted by semi-discretization into a corresponding DAE system. It is subsequently realized for the purpose of simulations using a recently emerging control based approach. Thus, the typical requirement of consistent initialization is avoided for a large class of systems. The PDAE formulation and the numerical solution approach are illustrated through a particular application: modeling of fluid-structure interactions in arterial hemodynamics.

Fluid-Structure Interactions

2009 ◽  
Author(s):  
Michael Paidoussis ◽  
Stuart Price ◽  
Emmanuel de Langre
Keyword(s):  
Fluid Structure Interactions ◽  
Fluid Structure

Experimental Mixing Parameterization Due to Multiphase Fluid � Structure Interactions

2010 ◽  
Vol 5 (2) ◽  
pp. 1-8
Author(s):  
Ranis N. Ibragimov ◽  
◽  
Akshin S. Bakhtiyarov ◽  
Margaret Snell ◽  
◽  
...  
Keyword(s):  
Fluid Structure Interactions ◽  
Fluid Structure ◽  
Multiphase Fluid
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