DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2007 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

DY: Fachverband Dynamik und Statistische Physik

DY 30: Poster II

DY 30.51: Poster

Thursday, March 29, 2007, 16:00–18:00, Poster D

2d barchan dunes made in the lab — •Christopher Groh1, Christof Krülle1, Andreas Wierschem2, Nuri Aksel2, and Ingo Rehberg11Experimentalphysik V, Universität Bayreuth, D-95440 Bayreuth — 2Technische Mechanik und Strömungsmechanik, Universität Bayreuth, D-95440 Bayreuth

For a long time people are fascinated by the dynamics of sand dunes. And so it is not surprising that there are a lot of studies outdoors, which give an overview about the facts of the formation of dunes in the desert or at the beach. In recent years scientists looked for theoretical models to give answers to the basic questions of the physical mechanisms of dune formation and migration [1,2]. In our setup we are able to investigate the dynamics of a well defined two-dimensional single barchan dune under the force of a shearing water flow. This allows easily the validation of the existing two-dimensional theoretical models with our experimental data. Beyond that, several unexpected new features have been observed.

[1] B. Andreotti, P. Claudin, and S. Douady, Eur. Phys. J. B 28, 341-352 (2002)

[2] K. Kroy, G. Sauermann and H. J. Herrmann Phys. Rev. E 66, 031302 (2002)

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2007 > Regensburg