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.

scholarly journals Numerical Methods for Fluid-Structure Interaction — A Review

2012 ◽  
Vol 12 (2) ◽  
pp. 337-377 ◽  
Author(s):  
Gene Hou ◽  
Jin Wang ◽  
Anita Layton
Keyword(s):  
Numerical Methods ◽  
Fluid Structure Interaction ◽  
Fluid Flows ◽  
Fluid Structure Interactions ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Wide Range ◽  
Recent Developments ◽  
Conforming Meshes ◽  
Incompressible Fluid Flows

AbstractThe interactions between incompressible fluid flows and immersed structures are nonlinear multi-physics phenomena that have applications to a wide range of scientific and engineering disciplines. In this article, we review representative numerical methods based on conforming and non-conforming meshes that are currently available for computing fluid-structure interaction problems, with an emphasis on some of the recent developments in the field. A goal is to categorize the selected methods and assess their accuracy and efficiency. We discuss challenges faced by researchers in this field, and we emphasize the importance of interdisciplinary effort for advancing the study in fluid-structure interactions.

Boundary Element Methods in Probabilistic Acoustic Radiation Problems

1990 ◽  
Vol 112 (4) ◽  
pp. 556-560 ◽  
Author(s):  
R. P. Daddazio ◽  
M. M. Ettouney
Keyword(s):  
Boundary Element ◽  
Acoustic Radiation ◽  
Probabilistic Approach ◽  
Boundary Element Methods ◽  
Fluid Structure Interactions ◽  
Scattering Problems ◽  
Fluid Structure ◽  
Wide Range ◽  
System Properties ◽  
Engineering Practices

Boundary Element Methods (BEM) are suited to a wide range of engineering problems, especially those of a semi-infinite nature. Examples of such problems can be found in the fluid-structure interactions of acoustic radiation and scattering problems and in the soil-structure interactions of earthquake and machine foundation problems. The required input parameters, dynamic loads, and system properties for such problems are not in general well-defined and can be considered random variables. Probabilistic structural analysis through the use of the BEM has been introduced by Ettouney et al. (1989a, 1989b) for the solution of plane elastic systems with uncertain material properties. The method was applied to solution of problems in the fields of structural and geotechnical engineering. In this work, we extend the use of this probabilistic approach to area of fluid-structure interaction by applying this technique to the problem of acoustic radiation from structures. The advantages of the probabilistic viewpoint are discussed with regard to current engineering practices. The importance of confidence estimates for criteria of nonexceedance response is emphasized.

scholarly journals Effective Root-Finding Methods for Nonlinear Equations Based on Multiplicative Calculi

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Ali Özyapıcı ◽  
Zehra B. Sensoy ◽  
Tolgay Karanfiller
Keyword(s):  
Numerical Analysis ◽  
Numerical Methods ◽  
Rate Of Convergence ◽  
Nonlinear Equations ◽  
Science And Engineering ◽  
Root Finding ◽  
Wide Range ◽  
Newton Raphson ◽  
Methods Numerical

In recent studies, papers related to the multiplicative based numerical methods demonstrate applicability and efficiency of these methods. Numerical root-finding methods are essential for nonlinear equations and have a wide range of applications in science and engineering. Therefore, the idea of root-finding methods based on multiplicative and Volterra calculi is self-evident. Newton-Raphson, Halley, Broyden, and perturbed root-finding methods are used in numerical analysis for approximating the roots of nonlinear equations. In this paper, Newton-Raphson methods and consequently perturbed root-finding methods are developed in the frameworks of multiplicative and Volterra calculi. The efficiency of these proposed root-finding methods is exposed by examples, and the results are compared with some ordinary methods. One of the striking results of the proposed method is that the rate of convergence for many problems are considerably larger than the original methods.

Fluid-Structure Interactions

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