Fluid Structure Interaction and Moving Boundary Problems IV

10.2495/fsi07 ◽  
2007 ◽  
Keyword(s):  
Moving Boundary ◽  
Fluid Structure Interaction ◽  
Moving Boundary Problems ◽  
Boundary Problems ◽  
Fluid Structure ◽  
Structure Interaction

A Fluid-Structure Interaction Modeling Approach of Lubricated Bearing-Type Sliding Contacts

2012 ◽  
Author(s):  
Jeremiah N. Mpagazehe ◽  
C. Fred Higgs
Keyword(s):  
Reynolds Equation ◽  
Moving Boundary ◽  
Stokes Equations ◽  
Fluid Structure Interaction ◽  
Fluid Pressure ◽  
Navier Stokes ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Processing Power ◽  
Interaction Modeling

In many tribological applications, such as journal bearings and gears, a fluid film is used to accommodate velocity between moving surfaces. To model the behavior of this film and to predict its ability to carry load, the Reynolds equation is predominantly employed. As computational processing power continues to increase, computational fluid dynamics (CFD) is increasingly being employed to predict the fluid behavior in lubrication environments. Using CFD is advantageous in that it can provide a more general approximation to the Navier-Stokes equations than the Reynolds equation. Moreover, using CFD allows for the simulation of multiphase flows as could occur during bearing contamination and bearing exit conditions. Because the bearing surfaces move relative to each other as they obtain equilibrium with the fluid pressure, there is a need to incorporate the moving boundary into the CFD calculation, which is a non-trivial task. In this work, a fluid-structure interaction (FSI) technique is explored as an approach to model the dynamic coupling between the moving bearing surfaces and the lubricant. The benefits of using an FSI approach are discussed and the results of its implementation in a lubricated sliding contact model are presented.

An adaptive mesh rezoning scheme for moving boundary flows and fluid–structure interaction

2007 ◽  
Vol 36 (1) ◽  
pp. 77-91 ◽  
Author(s):  
Arif Masud ◽  
Manish Bhanabhagvanwala ◽  
Rooh A. Khurram
Keyword(s):  
Moving Boundary ◽  
Fluid Structure Interaction ◽  
Adaptive Mesh ◽  
Fluid Structure ◽  
Structure Interaction

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.

FLUID STRUCTURE INTERACTION OF ROWING BLADE FOR HYDRODYNAMIC PROPULSION TO ENHANCE ROWING PERFORMANCE

2014 ◽  
Author(s):  
Abdul Aziz Mohd. Yusof ◽  
◽  
Ardiyansyah Syahrom ◽  
M. N. Harun ◽  
A. H. Omar
Keyword(s):  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Rowing Performance
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