Wake flows behind bats and virtual tours through thunderstorms

The 10th International Symposium on Particle Image Velocimetry is being held in Delft this week.
The symposium, from 1-3 July 2013, brings together PIV users and developers from around the world. It is the tenth installment in a biannual symposium series, following previous symposia such as Kobe (2011), Melbourne (2009) and Rome (2007).

The main objective of the symposium is to exchange the latest research results in the development of PIV-related techniques and innovative applications.

Particle Image Velocimetry has become the standard technique for flow measurement in both fundamental research and for industrial applications. In recent years, the technique has been significantly expanded through hardware and processing innovations: fully time-resolved, volumetric velocity measurements are now possible. At the same time, the range of applications has broadened: PIV is routinely applied in aerodynamics, multiphase flows, microfluidics and in biological applications.

Keynote speakers who will be talking about these developments include Prof. of ecology and evolutionary biology Kenny Breuer of Brown University and Delft Prof. of atmospheric physics Harm Jonker. Breuers current research interests include non-continuum flows at the nanometer scale, bacterial swimming, animal flight and energy harvesting from fluids. One of the topics he will talk about is the wake flow behind bats flying in a wind tunnel.

Jonker will take the audience on a virtual helicopter tour through clouds streets and a developing thunderstorm to show the essentially three-dimensional structure of the cloud fields. His simulations run entirely on the GPU (Graphics Processing Unit) which provides a huge computational boost: simulations formerly performed on 64 CPU cores of a supercomputer can now be performed on a single desktop GPU. This speedup has paved the way to running interactive simulations.

For more information on the symposium:

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