A simple mesh-update procedure for fluid–structure interaction problems

2016 ◽  
Vol 169 ◽  
pp. 13-23 ◽  
Author(s):  
A. Jendoubi ◽  
J. Deteix ◽  
A. Fortin
Keyword(s):  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Mesh Update

A comparative study of dynamic mesh updating methods used in the simulation of fluid-structure interaction problems with a non-linear free surface

2004 ◽  
Vol 218 (3) ◽  
pp. 283-300 ◽  
Author(s):  
N M Sudharsan ◽  
R Ajaykumar ◽  
K Murali ◽  
K Kumar
Keyword(s):  
Free Surface ◽  
Moving Boundary ◽  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Non Linear ◽  
Linear Spring ◽  
Laplacian Smoothing ◽  
Solution Accuracy ◽  
Mesh Update

This paper compares the performance of three mesh movement algorithms: Laplacian smoothing, linear spring analogy and torsion spring analogy for a fluid mesh update in staggered fluid-structure interaction (FSI) simulations with a non-linear free surface. The mesh updating schemes are applied to simulate three representative cases of the above-stated dual moving boundary problem. The performances of the algorithms are gauged on the basis of their ability to delay the initiation of a complete remesh of the fluid domain while maintaining solution accuracy. To satisfy this dual objective, the mesh-updating algorithm should not only prevent mesh failure but should also maintain well-shaped triangles. The reasons for the failure of different schemes are explained and suitable modifications are suggested/implemented to enhance thier performance. It is shown that these modifications prove to be very successful in improving the effectiveness of the algorithms.

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