A numerical framework for simulatingfluid-structure interaction phenomena
Journal Title: Frattura ed Integrità Strutturale - Year 2014, Vol 8, Issue 29
Abstract
In this paper, a numerical tool able to solve fluid-structure interaction problems is proposed. Thelattice Boltzmann method is used to compute fluid dynamics, while the corotational finite element formulationtogether with the Time Discontinuous Galerkin method are adopted to predict structure dynamics. TheImmersed Boundary method is used to account for the presence of an immersed solid in the lattice fluidbackground and to handle fluid-structure interface conditions, while a Volume-of-Fluid-based method isadopted to take trace of the evolution of the free surface. These ingredients are combined through a partitionedstaggered explicit strategy, according to an efficient and accurate algorithm recently developed by the authors.The effectiveness of the proposed methodology is tested against two different cases. The former investigatesthe dam break phenomenon, involving the modeling of the free surface. The latter involves the vibration regimeexperienced by two highly deformable flapping flags obstructing a flow. A wide numerical campaign is carriedout by computing the error in terms of interface energy artificially introduced at the fluid-solid interface.Moreover, the structure behavior is dissected by simulating scenarios characterized by different values of theReynolds number. Present findings are compared to literature results, showing a very close agreement.
Authors and Affiliations
A. De Rosis, S. De Miranda, C. Burrafato, F. Ubertini
Keywords
Related Articles
- EP ID EP131746
- DOI 10.3221/IGF-ESIS.29.30
- Views 74
- Downloads 0
Wear surface damage of a Stainless Steel EN 3358 aeronautical component subjected to sliding
The present paper describes the failure analysis of an aircraft component subjected to several episodes of in service failure, resulted in loss of the aircraft safety. Modern aircrafts are provided with mechanical...
Local approaches for the fracture assessment of notched components: the research work developed by Professor Paolo Lazzarin
Brittle failure of components weakened by cracks or sharp and blunt V-notches is a topic of active and continuous research. It is attractive for all researchers who face the problem of fracture of materials under&...
Designing aluminium friction stir welded joints against multiaxial fatigue
The present paper investigates the accuracy of the Modified Wöhler Curve Method (MWCM) in estimating multiaxial fatigue strength of aluminium friction stir (FS) welded joints. Having developed a bespoke joini...
Fatigue life assessment of thin-walled welded joints under non-proportional load-time histories by the shear stress rate integral approach
Fatigue life tests under constant and variable amplitude loadings were performed on the tube-tube thin-walled welded specimens made of magnesium (AZ31 and AZ61) alloys. The tests included pure axial, pure torsiona...
Fatigue cracking of aluminium alloy AlZn6Mg0.8Zr subjected to thermomechanical treatment
The paper presents the results of experimental test of the fatigue of aluminium alloy type AlZn6Mg0,8Zr exposed to various low temperature thermomechanical treatment. Basquin’s characteristics of fatigue have...