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Open-Source Parametric Finite-Element Meshing Tool for Fixed-Wing AWE Kites

Eijkelhof, D. (author), Fagan, Edward (author), Schmehl, R. (author)

conference paper 2022

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A Reference Economic Model for Airborne Wind Energy Systems

Joshi, R. (author), Trevisi, F. (author), Schmehl, R. (author), Croce, A. (author), Riboldi, Carlo (author)

conference paper 2022

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The Airborne Wind Energy Resource Analysis Tool AWERA

Thimm, L. (author), Schelbergen, M. (author), Bechtle, Philip (author), Schmehl, R. (author)

conference paper 2022

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Development of an Aeroelastic Simulation Framework for Leading Edge Inflatable Kites

Watchorn, J.P. (author), Viré, A.C. (author), Schmehl, R. (author)

conference paper 2022

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Low and High Fidelity Aerodynamic Simulations for Airborne Wind Energy Box-Wings

Buendía, Gabriel (author), Eijkelhof, D. (author), Schmehl, R. (author)

conference paper 2022

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Fostering International Collaboration Within IEA Wind TCP Task 48

Thoms, Stefanie (author), Petrick, Kristian (author), Schmehl, R. (author)

conference paper 2022

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A Semi-Empirical Aerodynamic Model Based on Dynamic Stall for Rigid-Framed Delta Kites during Figure-of-Eight Maneuvers

Castro Fernández, I. (author), Cavallaro, Rauno (author), Schmehl, R. (author), Sánchez-Arriaga, Gonzalo (author)

conference paper 2022

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Simulation of the Transition Phase for an Optimally-Controlled Tethered VTOL Rigid Aircraft for AirborneWind Energy Generation

Rushdi, Mostafa (author), Hussein, Ahmed A. (author), Dief, Tarek (author), Yoshida, Sheigeo (author), Schmehl, R. (author)

Airborne wind energy (AWE) is an innovative renewable energy technology, with the potential to substantially reduce the cost of energy. This paper introduces a solution for one of the main challenges of AWE systems, which is the automated reliable launching of the airborne system component. Our launch system configuration consists of a rigid...

conference paper 2020

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Welcome and Introduction to the Airborne Wind Energy Conference 2019

Schmehl, R. (author), Tulloch, Oliver (author)

conference paper 2019

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A Modular Control Architecture for Airborne Wind Energy Systems

Rapp, S. (author), Schmehl, R. (author), Oland, Espen (author), Schmidt, Sture (author), Haas, Thomas (author), Meyers, Johan (author)

Airborne wind energy is an emerging technology that uses tethered unmanned aerial vehicles for harvesting wind energy at altitudes higher than conventional towered wind turbines. To make the technology competitive to other renewable energy technologies an automatic control system is required that allows autonomously operating the system...

conference paper 2019

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Kite-powered design-to-robotic-production for affordable building on demand

Bier, H.H. (author), Schmehl, R. (author), Mostafavi, Sina (author), Anton, A.M. (author), Bodea, I.S.B. (author)

Building technologies employed today in 2nd and 3rd world countries are imported, expensive, outdated and unsustainable. Highly developed countries, on the other hand, rapidly advance in developing affordable, numerically controlled and robotically supported material- and energy-efficient methods for building on demand. The research team...

conference paper 2017

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A tool for aerodynamic analysis of flexible kites (poster)

Franca, B. (author), Schmehl, R. (author)

Poster presented at International Airborne Wind Energy Conference (AWEC), 2015.

conference paper 2015

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Multiple Wake Vortex Lattice Method for Airborne Wind Energy Membrane-Wing Kites (poster)

Leuthold, R. (author), De Oliveira Andrade, G.L. (author), Schmehl, R. (author)

conference paper 2015

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FSI of Inflatable Kite Wings (poster)

Rajan, N.K. (author), Vire, A. (author), Schmehl, R. (author), Van Bussel, G.J.W. (author)

A novel fluid-structure interaction (FSI) simulation framework is being developed at the KitePower group of TU Delft. Developing an FSI simulator suitable for the kite problem has to take into account the following factors.

conference paper 2015

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Pumping kites wind farm (poster)

Faggiani, P. (author), Schmehl, R. (author), Van der Vlugt, R. (author)

conference paper 2015

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Efficiency of kite power systems in pumping operation

Fechner, U. (author), van der Vlugt, R. (author), Schmehl, R. (author), Ockels, W.J. (author)

Seminar organized by Delft University Wind energy research institute for European Academy of Wind Energy

conference paper 2011

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Model comparison for angle droplet fragmentation under varying accelerations

Bartz, F.O. (author), Guildenbecher, D.R. (author), Schmehl, R. (author), Koch, R. (author), Bauer, H.J. (author), Sojka, P.E. (author)

Different models for single droplet fragmentation have been assessed for different initial accelerations in the bag and sheet-thinning regimes. The predictions have been compared to high-speed-video sequences where a single droplet is injected in a cross-flow of air. It is concluded that the modeling of the temporal evolution of the breakup...

conference paper 2011

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Modeling and simulation of kite power systems

Schmehl, R. (author)

conference paper 2011

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An extension of dynamic droplet deformation models to secondary atomization

Bartz, F.O. (author), Schmehl, R. (author), Koch, R. (author), Bauer, H.J. (author)

A detailed model for secondary atomization of liquid droplets by aerodynamic forces is presented. As an empirical extension of dynamic droplet deformation models, it accounts for temporal variations of the relative velocity between droplet and gas phase during the deformation and breakup process and describes the characteristic features of...

conference paper 2010

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CFD Analysis of Fuel Atomization, Secondary Droplet Breakup and Spray Dispersion in the Premix Duct of a LPP Combustor

Schmehl, R. (author), Maier, G. (author), Wittig, S. (author)

The two phase flow in the premix duct of a LPP combustor is computed using a Lagrangian droplet tracking method. To reproduce the characteristic spray structure of an air-assisted pressure-swirl atomizer, a sheet spray model is de-rived from measured sheet parameters and combined with an advanced concept for modeling secondary atomization...

conference paper 2000