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Granular Matter

, Volume 1, Issue 1, pp 33–41 | Cite as

Interaction of a granular stream with an obstacle

  • Volkhard Buchholtz
  • Thorsten Pöschel

Abstract

We investigate numerically the interaction of a stream of granular particles with a resting obstacle in two dimensions. For the case of high stream velocity we find that the force acting on the obstacle is proportional to the square of the stream velocity, the density and the obstacle size. This behaviour is equivalent to that of non-interacting hard spheres. For low stream velocity a gap between the obstacle and the incoming stream particles appears which is filled with granular gas of high temperature and low density. As soon as the gap appears the force does not depend on the square of velocity of the stream but the dependency obeys another law.

Keywords

Hard Sphere Stream Velocity Incoming Stream Granular Particle High Stream 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Volkhard Buchholtz
    • 1
  • Thorsten Pöschel
    • 1
  1. 1.Humboldt-Universität zu Berlin, Institut für Physik, InvalidenstraOElig; 110, D-10115 Berlin, Germany volkhard@summa.physik.hu-berlin.de, thorsten@itp02.physik.hu-berlin.de DE

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