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Van der Velden, W.C.P. (author), Van Zuijlen, A.H. (author), De Jong, A.T. (author), Bijl, H. (author)
The flow around a beveled flat plate model with an asymmetric 25 degrees trailing edge with three rounding radii is analyzed using a Navier-Stokes based open source software package OpenFOAM in order to predict the aeroacoustic properties of the models. A Large Eddy Simulation with a dynamic Smagorinsky and implicit model are used as closure...
conference paper 2015
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Fernandes, O. (author), Blom, D.S. (author), Frey, S. (author), Van Zuijlen, A.H. (author), Bijl, H. (author), Ertl, T. (author)
We present an integrated in-situ visualization approach for partitioned multi-physics simulation of fluid-structure interaction. The simulation itself is treated as a black box and only the information at the fluid-structure interface is considered, and communicated between the fluid and solid solvers with a separate coupling tool. The...
conference paper 2015
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Blom, D.S. (author), Krupp, V. (author), Van Zuijlen, A.H. (author), Klimach, H. (author), Roller, S. (author), Bijl, H. (author)
Multi-physics simulations, such as fluid-structure-acoustics interaction (FSA), require a high performance computing environment in order to perform the simulation in a reasonable amount of computation time. Currently used coupling methods use a staggered execution of the fluid and solid solver [6], which leads to inherent load imbalances. In ...
conference paper 2015
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Van der Velden, W.C.P. (author), Van Zuijlen, A.H. (author), De Jong, A.T. (author), Bijl, H. (author)
A Large Eddy Simulation (LES) with four different closure models are analyzed in OpenFOAM, an open source Computional Fluid Dynamics (CFD) package and validated for the determination of the streamwise and spanwise coherence length of the pressure field below a turbulent boundary layer at low Reynolds numbers. Matching results are found for outer...
conference paper 2014
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Florentie, L. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
This paper is the starting point for the development of a multi-fidelity modeling approach for vortex generators (VG) arrays, where a fully resolved VG model will be coupled with an approximate model in order to improve both accuracy and flexibility without increasing the required computational cost. As a first step thereto, an analysis of the...
conference paper 2014
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Blom, D.S. (author), Bijl, H. (author), Birken, P. (author), Meister, A. (author), Van Zuijlen, A.H. (author)
This contribution compares the efficiency of Rosenbrock time integration schemes with ESDIRK schemes, applicable to unsteady flow and fluid-structure interaction simulations. Compared to non-linear ESDIRK schemes, the linear implicit Rosenbrock-Wanner schemes require subsequent solution of the same linear systems with different right hand sides....
conference paper 2013
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Kazemi Kamyab, V. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
Noting that time-accurate computations of the unsteady incompressible Navier-Stokes (INS) equations can be computationally expensive, a family of higher order implicit multi-stage time integration schemes (namely ESDIRK) is used for advancing the solution to the unsteady INS in time. The higher order time integration schemes have the potential...
conference paper 2012
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Kazemi Kamyab, V. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
Thermal interaction of fluids and solids, or conjugate heat transfer (CHT), is encountered in many engineering applications. Since time-accurate computations of such coupled problems can be computationally expensive, we consider loosely-coupled and strongly- coupled solution algorithms in which higher order multi-stage Runge-Kutta schemes are...
conference paper 2012
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Scholcz, T.P. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
The focus of this paper is on acceleration of strong partitioned coupling algorithms for fluid-structure interaction. Strong partitioned coupling requires the solution of a coupled problem at each time step during the simulation. Hereto, an interface residual is defined such that the kinematic and dynamic interface conditions on the fluid...
conference paper 2012
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Gillebaart, T. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
In this paper, the influence of wing flexibility and the 'clap-and-peel' motion (one versus two wings) on the upward (lifting) force in hover is studied. CFD simulations based on the ALE Navier-Stokes equations together with radial basis function mesh interpolation are used. For the 'clap-and-peel' motion an immersed symmetry plane is introduced...
conference paper 2011
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Gillebaart, T. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
In this paper, the influence of wing flexibility and the 'clap-and-peel' motion (one versus two wings) on the upward (lifting) force in hover is studied. CFD simulations based on the ALE Navier-Stokes equations together with radial basis function mesh interpolation are used. For the 'clap-and-peel' motion an immersed symmetry plane is introduced...
conference paper 2011
document
Scholcz, T.P. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
High fidelity analysis of fluid-structure interaction systems is often too timeconsuming when a large number of model evaluations are required. The choice for a solution procedure depends often on the efficiency of the method and the possibility of reusing existing field solvers. Aggressive Space-Mapping, a technique originally developed for...
conference paper 2011
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Kreeft, J.J. (author), Weghs, M. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
Two reduced order models are presented for the simulation of physically strong coupled fluid-structure interaction problem, based on computationally partitioned flow and structure solvers. The reduced order models used are a class of quasi-Newton coupling methods to obtain a stable solution and to reduce the number of subiterations. The second...
conference paper 2011
document
Sterenborg, J.J.H.M. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
In order to validate fluid-structure interaction solvers, a one degree of freedom (1 DOF) aeroelastic experiment is performed. A rigid wing with an harmonically actuated flap, is suspended by springs to allow a free heaving motion. Displacements and time dependent aerodynamic forces are measured for reduced flap frequencies ranging from k = 0.1...
conference paper 2011
document
Kazemi Kamyab, V. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
The application of higher order implicit time integration schemes to conjugate heat transfer problems is analyzed with Dirichlet-Neumann as the decomposition method. In the literature, only up to second order implicit time integration schemes have been reported while there is a potential for gaining computational efficiency using higher orders....
conference paper 2011
document
Van Zuijlen, A.H. (author), Bijl, H. (author)
Computational fluid-structure interaction is commonly performed using a partitioned approach. For strongly coupled problems sub-iterations are required, increasing computational time as flow and structure have to be resolved multiple times every time step. Reductions in computing times can be achieved by e.g. improving the convergence of the sub...
conference paper 2011
document
Van Zuijlen, A.H. (author), Bijl, H. (author)
Computational fluid-structure interaction is most commonly performed using a partitioned approach. For strongly coupled problems sub-iterations are required, increasing computational time as flow and structure have to be resolved multiple times every time step. Many sub-iteration techniques exist that improve robustness and convergence, although...
conference paper 2009
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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
document
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
document
Bijl, H. (author), Van Zuijlen, A.H. (author), Bosscher, S. (author)
In this paper we use the multigrid algorithm - commonly used to improve the efficiency of the flow solver - to improve the efficiency of partitioned fluid-structure interaction iterations. Coupling not only the structure with the fine flow mesh, but also with the coarse flow mesh (often present due to the multigrid scheme) leads to a significant...
conference paper 2006
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