Collaborative research funded by Institute of Mechanics Processes and Control -Twente (IMPACT before 2010), and Woods Hole Oceanographic Institution
Overview presentation: Lorentz Center October 2009.

Granular flow phenomena in movies:

• a) Reservoir formation: dam break of glass beads on an inclined chute with contraction. mpg. (dambr_obokhove2007a.mpg)
  
  An idealized experimental version of the Mount St. Helens volcanic lahar?
  
  
• b) Multiple flow states: glass beads on an inclined chute with contraction. (grantr_obokhove2007b.mpg)
  
• c) Granular bore: nonspherical poppy seeds on an inclined chute with contraction. (poppys_obokhove2007c.mpg)
  
  Towards controling flows in particulate handling? (Poppy seeds from Dipasa Europe.)
  
  
• e) Experiments with Prof. Kuipers & co. Chemical Reaction Engineering:
  chute flow with inclination such that there is uniform flow in the absence of a contraction or obstacle:
  

• A.W. Vreman, M. Al-Tarazi, J.A.M. Kuipers, M. van Sint Annaland, and O. Bokhove 2007:
  Supercritical shallow granular flow through a contraction: experiment, theory and simulation. Journal of Fluid Mech. 578, 233-269
• B. Akers and O. Bokhove 2008: Hydraulic flow through a channel contraction: multiple steady states. Physics of Fluids 20, 056601.
  Movie (Akers & B. '05): multiple steady states in horizontal channel; pink water; bird's eye view. (threestates.mov)
  Movie (Akers & B. '07): reservoir state. (MOV01794.MPG)
• Sander Rhebergen, Onno Bokhove, and Jaap van der Vegt, 2009:
  Discontinuous Galerkin finite element methods for shallow two-phase flows. CMAME 198, 819-830.
  Slurry flows simulation by Sander Rhebergen of an experiment by Akers and Bokhove: transition of steady state due to sudden release of floating particles with density of 900 kg/m^3. (obliquepor.mov)
• Slurry flows: Discrete element study of liquid-solid flows. Micheline Abbas et al., 2009.
  Conf. Proceedings. International Symposium of Multiphase Flows, July 11-15, 2009, Xi'an, China.