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Development of algorithms for the partitioned simulation of strongly coupled fluid-structure interaction problems

Joris Degroote (UGent)
(2010)
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Promoter
(UGent)
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Abstract
Fluid-structure interaction refers to the mutual interaction between a fluid flow and a deforming structure. This phenomenon occurs due to the blood flow in our arteries and also during the inflation of a balloon. To simulate fluid-structure interaction problems, both flow equations and the structural equations have to be solved. Partitioned techniques solve the flow equations and the structural equations separately by coupling a flow solver with a structural solver. However, as the governing equations are solved separately, the stresses and displacements on the fluid-structure interface are not automatically in equilibrium. Therefore, coupling iterations between the flow solver and the structural solver have to be performed in each time step of the partitioned simulation if the interaction between the flow and the structure is strong. In this research, the stability of a simple coupling algorithm has been investigated to gain insight into the difficulties of partitioned fluid-structure interaction simulations. Furthermore, existing and more complex algorithms have been compared and several new algorithms have been developed. Most of these algorithms do not require knowledge or more modification of the internals of the flow solver and the structural solver. Finally, fluid-structure interaction problems involving free surface flow have been solved.
Keywords
partitioned, Fluid-structure interaction, simulation, least squares, quasi-Newton

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Citation

Please use this url to cite or link to this publication:

MLA
Degroote, Joris. “Development of Algorithms for the Partitioned Simulation of Strongly Coupled Fluid-structure Interaction Problems.” 2010 : n. pag. Print.
APA
Degroote, Joris. (2010). Development of algorithms for the partitioned simulation of strongly coupled fluid-structure interaction problems. Ghent University. Faculty of Engineering, Ghent, Belgium.
Chicago author-date
Degroote, Joris. 2010. “Development of Algorithms for the Partitioned Simulation of Strongly Coupled Fluid-structure Interaction Problems”. Ghent, Belgium: Ghent University. Faculty of Engineering.
Chicago author-date (all authors)
Degroote, Joris. 2010. “Development of Algorithms for the Partitioned Simulation of Strongly Coupled Fluid-structure Interaction Problems”. Ghent, Belgium: Ghent University. Faculty of Engineering.
Vancouver
1.
Degroote J. Development of algorithms for the partitioned simulation of strongly coupled fluid-structure interaction problems. [Ghent, Belgium]: Ghent University. Faculty of Engineering; 2010.
IEEE
[1]
J. Degroote, “Development of algorithms for the partitioned simulation of strongly coupled fluid-structure interaction problems,” Ghent University. Faculty of Engineering, Ghent, Belgium, 2010.
@phdthesis{940469,
  abstract     = {Fluid-structure interaction refers to the mutual interaction between a fluid flow and a deforming structure. This phenomenon occurs due to the blood flow in our arteries and also during the inflation of a balloon. To simulate fluid-structure interaction problems, both flow equations and the structural equations have to be solved. Partitioned techniques solve the flow equations and the structural equations separately by coupling a flow solver with a structural solver. However, as the governing equations are solved separately, the stresses and displacements on the fluid-structure interface are not automatically in equilibrium. Therefore, coupling iterations between the flow solver and the structural solver have to be performed in each time step of the partitioned simulation if the interaction between the flow and the structure is strong.
In this research, the stability of a simple coupling algorithm has been investigated to gain insight into the difficulties of partitioned fluid-structure interaction simulations. Furthermore, existing and more complex algorithms have been compared and several new algorithms have been developed. Most of these algorithms do not require knowledge or more modification of the internals of the flow solver and the structural solver. Finally, fluid-structure interaction problems involving free surface flow have been solved.},
  author       = {Degroote, Joris},
  isbn         = {9789085783442},
  keywords     = {partitioned,Fluid-structure interaction,simulation,least squares,quasi-Newton},
  language     = {eng},
  pages        = {XXXVII, 267},
  publisher    = {Ghent University. Faculty of Engineering},
  school       = {Ghent University},
  title        = {Development of algorithms for the partitioned simulation of strongly coupled fluid-structure interaction problems},
  url          = {http://lib.ugent.be/fulltxt/RUG01/001/387/614/RUG01-001387614_2010_0001_AC.pdf},
  year         = {2010},
}