Airborne Wind Energy Development Database

Social Acceptance of Airborne Wind Energy

Radio-Frequency Positioning for Airborne Wind Energy Systems

An Open-Source Software Platform for AWE Systems

Do homeowners save more?: Evidence from the Panel o Household Finances (PHF)

In this paper we analyse the impact of property ownership on the saving behaviour of households. We are particularly interested in investigating whether homeowners save more than renters or not. A related question is whether mortgage payments and other regular savings are substitutes or complements for German households. To answer these...

ODTLES: A multi-scale ansatz for highly turbulent flows

We use ODTLES, a multi-dimensional extension of the One-Dimensional-Turbulence model (ODT). ODT describes turbulent advection on a 1D sub-domain using a stochastic process for turbulent advection. These 1D sub-domains are coupled to obtain a 3D approach. ODTLES is applied to channel flow. Preliminary results for the pdf of the wall shear stress...

Incorporation of acceleration effects into the one-dimensional-turbulence model, with application to turbulent combustion and shock-turbulence interactions

One-dimensional turbulence (ODT) is a stochastic simulation in which 3D turbulence effects are captured on a notional 1D line of sight by introducing instantaneous spatial re-arrangements (maps) that represent advection by notional turbulent eddies. These eddy events incorporate the possibility of kinetic-energy changes that are equal and...

Clustering of particles driven by salinity gradients in turbulence

Experimental analysis of the diffusiophoretic effect in turbulence demonstrates that preferential concentration of particles driven by the combined action of turbulence and inhomogeneous distribution of salinity exists. Additionally, theoretical predictions on the particle behavior could be confirmed. We provide evidence that inhomogeneous salt...

Innovative Approaches for Certification, Permission and Safety(Functions) of ABWE

Measurements with a redesigned 3D-PTV system in natural and mixed convection

The paper reports on the application of scientific CMOS cameras and high power LED light sources for three-dimensional particle tracking in large enclosures. An open source software is adapted to work with 16 bit grey value images. As fixed thresholds pointed out to be inappropiate for particle detection in 16 bit images due to temporal and...

Self-healing processes in ionomeric elastomers

The use of dynamic bonds in self-healing polymeric systems allows restoring of the chemical structure and mechanical properties multiple times. In this respect, the use of ionomers represents a promising approach. The strong interaction between ionic moieties within a non-polar matrix leads to microphase separation and a behavior similar to...

Flame front capturing/tracking schemes for compressible and incompressible reactive flow

We present hybrid capturing/tracking methods for the simulation of turbulent premixed flames in meso- and large-scale geometries. Such schemes resemble a tracking schemes in that the flame front is explicitly computed and propagated using a level set method. The flame-flow-coupling uses in-cell-reconstruction. In cut cells, burnt and unburned...

Compressible simulation of high-speed hydrodynamics with phase change

The present paper focuses on a numerical approach based on the Riemann problem to simulate liquid flows with phase changes. Thereby, the flow properties include velocities from O(1) m/s to O(100) m/s and pressures from p approx 0 bar to O(1000) bar. The thermal and caloric behavior of liquid and vapor will be described by suitable equations of...