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Noyon, T.A. (author), Tay, W.B. (author), Van Oudheusden, B.W. (author), Bijl, H. (author)A three-dimensional simulation of hovering flapping wings was performed using an immersed boundary method. This was done to investigate the effects of chordwise wing deformation on three important unsteady aerodynamic mechanisms found in flapping flight, namely Leading Edge Vortex (LEV) shedding, wake capture and clap and fling. A wing was...conference paper 2014
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Noyon, T.A. (author), Tay, W.B. (author), Van Oudheusden, B.W. (author), Bijl, H. (author)A three-dimensional simulation of hovering flapping wings was performed using an immersed noundary method. This was done to investigate the effects of chordwise wing deformation on three important unsteady aerodynamic mechanisms found in flapping flight, namely Leading Edge Vortex (LEV) shedding, wake capture and clap and fling. A wing was...conference paper 2014
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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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Blom, D.S. (author), Van Zuylen, A.H. (author), Bijl, H. (author)Strongly coupled partitioned fluid-structure interaction problems require multiple coupling iterations per time step. The fluid domain and the structure domain are solved multiple times in each time step such that the kinematic and dynamic interface conditions on the fluid-structure interface are satisfied. Quasi-Newton methods have been...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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- Deng, S. (author), Van Oudheusden, B.W. (author), Remes, B.D.W. (author), Persin, M. (author), Bijl, H. (author), Ruijsink, H.M. (author) conference paper 2013
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Tay, W.B. (author), Van Oudheusden, B.W. (author), Bijl, H. (author)The numerical simulation of a “X-wing” type biplane flapping wings, has been performed in 3D using the Immersed Boundary Method (IBM). This “X-wing” type flapping configuration draws its inspiration from Delfly [1], a family of ornithopters developed by the Delft University of Technology, as shown in Figure 1. The unique “X-wing” design features...conference paper 2013
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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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Tay, W.B. (author), Bijl, H. (author), Van Oudheusden, B.W. (author)Numerical simulations have been performed to examine the interference effects between an upstream flapping biplane airfoil arrangement and a downstream stationary tail at a Reynolds number of 1000, which is around the regime of small flapping micro aerial vehicles. The objective is to investigate the effect of the relative distance and angle of...conference paper 2012
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Boon, D.J. (author), Dwight, R.P. (author), Sterenborg, J.J.H.M. (author), Bijl, H. (author)We perform a fully stochastic analysis of an experiment in aerodynamics. Given estimated uncertainties on the principle input parameters of the experiment, including uncertainties on the shape of the model, we apply uncertainty propagation methods to a suitable CFD model of the experimental setup. Thereby we predict the stochastic response of...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
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Tay, W.B. (author), Bijl, H. (author), Van Oudheusden, B.W. (author)Numerical simulations have been performed to examine the interference effects between an upstream flapping airfoil and a downstream stationary airfoil in a tandem configuration at a Reynolds number of 1000, which is around the regime of small flapping micro aerial vehicles. The objective is to investigate the effect of the distance of the tail...conference paper 2011
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Tay, W.B. (author), Bijl, H. (author), Van Oudheusden, B.W. (author)Numerical simulations have been performed to examine the interference effects between an upstream flapping airfoil and a downstream stationary airfoil in a tandem configuration at a Reynolds number of 1000, which is around the regime of small flapping micro aerial vehicles. The objective is to investigate the effect of the distance of the tail...conference paper 2011
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De Baar, J.H.S. (author), Dwight, R.P. (author), Bijl, H. (author)We apply Ordinary Kriging to predict 75,000 terrain survey data from a randomly sampled subset of < 2500 observations. Since such a Kriging prediction requires a considerable amount of CPU time, we aim to reduce its computational cost. In a conventional approach, the cost of the Kriging analysis would be dominated by the optimization routine...conference paper 2011
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De Jong, A.T. (author), Bijl, H. (author), Scarano, F. (author)The present investigation focuses on the aero-acoustic resonance of cavities with a width much larger than their length or depth and partially covered, as often encountered in automotive door gaps. The cavities are under influence of a low Mach number flow with a relatively thick boundary layer. Under certain conditions, these cavities can...journal article 2011
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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