Regensburg 2010 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 30: Posters II

DY 30.51: Poster

Thursday, March 25, 2010, 16:00–18:00, Poster C

Granular dam-break inside an inclined rectangular channel — •Christian Kröner, Birte Domnik, and Shiva P. Pudasaini — Steinmann Institut, Universität Bonn

We aim to understand the granular incidents during a dam-break. Therefore the collapse of a granular column inside an inclined rectangular channel was recorded by a high speed camera to calculate the velocity field inside the granular medium. For this purpose, two different methods were utilized: a granular PIV for fine grains and a particle tracking method for coarse grains. We are currently analysing the recorded velocity field to determine the boundary between the resting and the flowing fraction. The temporal evolution of this boundary, together with the velocity profile of the flowing material, will be used to gain a deeper understanding of the rheological behaviour of granular media. In addition to that, the experimental observations will serve as a test case to determine visco-elastic-plastic parameters for numerical simulations.