Searched for: subject%3A%22fluid%255C%252Bstructure%255C%252Binteraction%22
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Wendland, H. (author)
This paper gives a survey on kernel-based scattered data interpolation methods in the context of static aeroelastic computations. We describe the general procedure, address problems and solutions for large-scale data sets, for flat data sets, and for rotational information. Finally, we demonstrate the versatility of the method by showing two...
conference paper 2006
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Degroote, J. (author), Vierendeel, J. (author), Dick, E. (author)
Bubbles and droplets can be simulated as a problem involving Fluid-Structure Interaction (FSI). The interface between the liquid and the gas is then conceived as a zero thickness structure. The position of the interface is determined by the equilibrium between surface tension effects and the pressure jump across the interface. Most techniques...
conference paper 2006
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Küttler, U. (author), Förster, C. (author), Wall, W.A. (author)
Many popular partitioned approaches to fluid-structure interaction (FSI) problems fail to work for an interesting subset of problems if highly deformable structures are interacting with incompressible flows. This is particularly true for coupling approaches based on Dirichlet-Neumann substructuring, both for weak and strong coupling schemes. The...
conference paper 2006
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Murea, C.M. (author), Vazquez, C. (author)
We study the fluid-structure coupled problem between an incompressible fluid and an elastic curved arch. The fluid flow is modeled by 2-D steady Stokes equations with normal velocity boundary condition on the curved interface and the arch verifies a particular 1-D case of the thin shell theory of Koiter. We present an optimal control formulation...
conference paper 2006
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Förster, C. (author), Wall, W.A. (author), Ramm, E. (author)
The artificial added mass effect inherent in sequentially staggered coupling schemes is investigated by means of a fluid-structure interaction problem. A discrete representation of a simplified added mass operator in terms of the participating coefficient matrices is given and instability conditions are evaluated for different temporal...
conference paper 2006
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Geller, S. (author), Tölke, J. (author), Krafczyk, M. (author), Kollmannsberger, S. (author), Düster, A. (author), Rank, E. (author)
In this paper the implementation of the bidirectional coupling approach for the partitioned Lattice Boltzmann (LB) fluid flow and Finite Element (p-FEM) structural mechanics solver will be discussed. Earlier research on a benchmark configuration showed that the explicit coupling algorithm of the two methods was prone to instabilities for some...
conference paper 2006
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Bungartz, H.J. (author), Mehl, M. (author)
The simulation of multiphysical scenarios has become a more and more important task of scientific computing within the last years. Due to their simplicity compared to monolithic approaches (solving a unique model for the whole scenario), partitioned approaches are widespread. They allow for a reusage of existing and established solvers for the...
conference paper 2006
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Bae, Y. (author), Jang, J.Y. (author), Moon, Y.J. (author)
In the present study, the effects of fluid-structure interaction (FSI) on the trailingedge noise are numerically investigated, particularly for the cases of wake instability and Karman vortex shedding. The trailing-edge is modelled as a flat plate with an elastic cantilever end and its flow-induced vibration is solved by an eigenmode analysis...
conference paper 2006
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Brenk, M. (author), Bungartz, H.J. (author), Neckel, T. (author)
Hierarchical Cartesian grids such as those defined by spacetrees have proven to be useful in lots of simulation scenarios in spite of their frequently supposed difficulties concerning the approximation of complicated and changing geometries. One of their most important advantages is the simple, efficient and flexible interface they offer. Thus,...
conference paper 2006
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Dunne, T. (author)
We propose a general variational framework for the adaptive finite element approximation of fluid-structure interaction problems. The modeling is based on an Eulerian description of the (incompressible) fluid as well as the (elastic) structure dynamics. This is achieved by tracking the movement of the initial positions of all `material' points....
conference paper 2006
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Gerstenberger, A. (author), Wall, W.A. (author)
This paper illustrates aspects of an ongoing effort to develop a fixed grid fluid-structure interaction scheme that can be applied to the interaction of most general structures with incompressible flow. After presenting a list of requirements for future fixed grid methods, an eXtended Finite Element Method (XFEM) based fixed grid method is...
conference paper 2006
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Lienhart, H. (author), Gomes, J.P. (author)
Experimental studies on reference test cases are of capital importance to support the development of models and coupling strategies for simulations on fluid-structure interaction problems. The need for experimental test cases specially addressed for the validation and diagnostic of numerical tools has triggered the present contribution to design...
conference paper 2006
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De Boer, A. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
In fluid-structure interaction simulations the meshes at the fluid-structure interface usually do not match, because of the different mesh requirements for the flow and structure. The exchange of data over the discrete interface becomes then far from trivial. In this paper we investigate the difference in accuracy and efficiency between a...
conference paper 2006
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Van der Zee, K.G. (author), Van Brummelen, E.H. (author), De Borst, R. (author)
Numerical simulations of fluid-structure interaction typically require vast computational resources. Finite-element techniques employing goal-oriented hp-adaptation strategies could offer a substantial improvement in the efficiency of such simulations. These strategies rely on dual-based a-posteriori error estimates for quantities of interest....
conference paper 2006
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Loeven, A. (author), Witteveen, J.A.S. (author), Bijl, H. (author)
In this paper a Two Step approach with Chaos Collocation for efficient uncertainty quantification in computational fluid-structure interactions is followed. In Step I, a Sensitivity Analysis is used to efficiently narrow the problem down from multiple uncertain parameters to one parameter which has the largest influence on the solution. In Step...
conference paper 2006
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Heck, M. (author), Sternel, D.C. (author), Schäfer, M. (author), Yigit, S. (author)
sensitivity of the coupled system is a crucial point. The investigation of characteristic values which are influencing the sensitivity, especially the numerical one, and therefrom the derivation of robust parameters for numerical simulations is the main purpose of this contribution. The method which is employed to solve the fluid-structure...
conference paper 2006
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De Boer, A. (author), Van der Schoot, M.S. (author), Bijl, H. (author)
A new point-by-point mesh movement algorithm is developed for the deformation of unstructured grids. The method is based on using radial basis function, RBFs, to interpolate the displacements of the boundary nodes to the whole flow mesh. A small system of equations has to be solved, only involving the nodes on the boundary of the flow domain....
conference paper 2006
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Bletzinger, K.U. (author), Gallinger, T. (author), Kupzok, A. (author), Wüchner, R. (author)
In this paper the possibility of the optimization of coupled problems in partitioned approaches is discussed. As a special focus, surface coupled problems of fluid-structure interaction are considered. Well established methods of optimization are analyzed for usage in the context of coupled problems and in particular for a solution through...
conference paper 2006
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Deiterding, R. (author), Cirak, F. (author), Mauch, S.P. (author), Meiron, D.I. (author)
The fluid-structure interaction simulation of detonation- and shock-wave-loaded fracturing thin-walled structures requires numerical methods that can cope with large deformations as well as topology changes. We present a robust level-set-based approach that integrates a Lagrangian thin shell finite element solver with fracture and fragmentation...
conference paper 2006
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De Tullio, M. (author), Christallo, A. (author), Balaras, E. (author), Pascazio, G. (author), (author), Iaccarino, G. (author), Napolitano, M. (author)
In this paper we discuss some of the recent advances in the immersed boundary (IB) method. More specifically, we show the application of this technique to problems with strong fluid/structure interaction and to compressible flows using local mesh refinement. These extensions are a must for the success of the IB method in industrial applications.
conference paper 2006
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