Measurements of small radius ratio turbulent Taylor-Couette flow

In Taylor-Couette flow, the radius ratio ($\eta = r_i/r_o$) is one of the key parameters of the system. For small $\eta$, the asymmetry of the inner and outer boundary layer becomes more important, affecting the general flow structure and boundary layer characteristics. Using high-resolution particle image velocimetry we measure flow profiles...

Bulk statistics of stable and decaying Taylor-Couette turbulence

In this talk we focus on the velocity fluctuations in highly turbulent Taylor-Couette flow for the case of stable flow (constant rotation) and for decaying flow. Turbulent flows are generally characterized by the range of scales of their fluctuations, and a statistical description of the flow is often done by calculating the correlations of...

Closing the gap between simulation and reality in the sensor and motion models of an autonomous AR.Drone

This article describes a method to develop an advanced navigation capability for the standard platform of the IMAV indoor competition: the Parrot AR.Drone. Our development is partlybased on simulation, which requires both a re-alistic sensor and motion model. This article de-scribes how a visual map of the indoor environ-ment can be made,...

The producer society and the transition towards a biobased society: Institutional innovation for a sustainable future

The biobased economy is a concept proposed by policymakers to accommodate the transition towards a sustainable society. This concept however is not familiar outside of policymaking and some academic circles, while a socio-technical transition supposes the shared commitment of the whole society. The need for this commitments becomes even bigger...