Flow regimes, transitions and segregation in granular and particle-laden flows

Workshop theme

There are a broad range of flow regimes in both granular and particle-laden flows, ranging through solid, fluid and gas-like behaviour. Mathematical models are now having some success at predicting the behaviour in particular flow regimes. However, even in elementary flow situations, all three phases may be active in different regions of the flow. This significantly complicates the formulation and solution of flow problems. This conference will provide a forum for mathematicians, engineers, and physicists to discuss the latest mathematical theories and experiments for the different flow regimes and transitions between them. Particle segregation due to differences in size and/or other particle properties will also be considered. This is of fundamental importance for mixing and de-mixing in many industrial processes and natural flows. Yet despite half a century of research, the mechanisms of segregation are not well understood. This meeting will seek to characterize the fundamental physical processes at work, and improve their description in both theoretical and computational models.

Invited Speakers

A. Acrivos, (City University of New York, USA)
R. Behringer,(Duke University, USA)
M. Cates, (University of Edinburgh, UK)
D. Drew, (Rensselaer Polytechnic Institute, USA)
R. Iverson, (United States Geological Survey, USA)
M. Koenders, (Kingston University, UK)
M. Louge, (Cornell University, USA)
O. Pouliquen, (Université de Marseille, FRANCE)
H. Shen, (Clarkson University, USA)
I. Vardoulakis, (National Technical University, GREECE)

The application is closed

Timetable

Monday 22nd September 2003
08:30 to 09:00	Registration	No Room Required
09:00 to 10:00	Andreas Acrivos Concentrated suspensions	Room 1
10:00 to 10:30	Daniel Hanes USGS Pacific Science Center Oscillatory sheet flows: experiments and models	Room 1
10:30 to 11:00	Peter King University of Nottingham The dynamics of thrown granular beds	Room 1
11:00 to 11:30	Coffee \& Poster Session I	No Room Required
11:30 to 12:00	Alexandre Valance Sand ripples formation in a laminar boundary layer flow	Room 1
12:00 to 12:30	Marina Neophytou University of Cambridge Confined particle-laden turbulent flows: a simple model to a complex problem	Room 1
12:30 to 13:30	Lunch at Wolfson Court	No Room Required
14:00 to 15:00	Donald Drew Rensselaer Polytechnic Institute Turbulent suspensions	Room 1
15:00 to 15:30	Tea \& Poster Session I	No Room Required
15:30 to 16:00	Tobias Boehm An experimental investigation of bed load transport mechanisms for shallow water flow down steep slopes	Room 1
16:00 to 16:30	Continuum models for aeolian sand ripples	Room 1
16:30 to 17:00	Jose Miguel Pasini Cornell University Transition from saltation to sheet flow in aeolian sediment transport	Room 1
17:30 to 18:30	Wine \& Beer Reception	No Room Required
18:45 to 19:30	Dinner at Wolfson Court (Residents Only)	No Room Required

Tuesday 23rd September 2003
09:00 to 10:00	Olivier Pouliquen Dry avalanches	Room 1
10:00 to 10:30	Jean Rajchenbach Dense, rapid flows of inelastic grains under gravity	Room 1
10:30 to 11:00	Kimberley Hill Structure and kinematics in dense free-surface granular flow	Room 1
11:00 to 11:30	Coffee \& Poster Session I	No Room Required
11:30 to 12:00	Michael Swift University of Nottingham Fluid-driven separation in binary granular mixtures	Room 1
12:00 to 12:30	Christophe Josserand Continuum-mechanical description of a dense, sheared, granular matter	Room 1
12:30 to 13:30	Lunch at Wolfson Court	No Room Required
14:00 to 15:00	Michel Louge Cornell University Particle segregation	Room 1
15:00 to 15:30	Tea \& Poster Session I	No Room Required
15:30 to 16:00	Segregation in 2D inclined chute flows	Room 1
16:00 to 16:30	Nina Kirchner University of Kaiserslautern Thermodynamics of segregating granular mixtures	Room 1
16:30 to 17:00	Colin Thornton University of Birmingham A simple model for particle size segregation in granular avalanches	Room 1
18:45 to 19:30	Dinner at Wolfson Court (Residents Only)	No Room Required

Wednesday 24th September 2003
09:00 to 10:00	Richard Iverson Debris flows	Room 1
10:00 to 10:30	E. Bruce Pitman University at Buffalo Modelling and computing geophysical mass flows	Room 1
10:30 to 11:00	Jim McElwaine University of Cambridge Snow avalanches	Room 1
11:00 to 11:30	Coffee \& Poster Session II	No Room Required
11:30 to 12:00	Joseph Calantoni NASA - Stennis Space Center Discrete particle model: approximating the shape of sediment particles	Room 1
12:00 to 12:30	John Melrose Shear induced transitions in over-damped particle flow, ordering and thickening	Room 1
12:30 to 13:30	Lunch at Wolfson Court	No Room Required
14:00 to 15:00	Bob Behringer Duke University Elastic, frictional flow	Room 1
15:00 to 15:30	Tea \& Poster Session II	No Room Required
15:30 to 16:00	Duan Zhang Los Alamos National Laboratory Time scales in dense granular flows	Room 1
16:00 to 16:30	Brian Utter Duke University Diffusion and elastic energy measurements in dense granular shear flows	Room 1
16:30 to 17:00	Francois Chevoir Laboratoire Navier Dense flows of dry grains	Room 1
19:45 to 18:00	Conference Dinner at Pembroke College	No Room Required

Thursday 25th September 2003
09:00 to 10:00	Curt Koenders Elastic, frictional deformations	Room 1
10:00 to 10:30	Granular piles and marginal rigidity	Room 1
10:30 to 11:00	Luigi La Ragione Politecnico di Bari A statistical approach in the theory of fluctuations for a random array of identical spheres	Room 1
11:00 to 11:30	Coffee \& Poster Session II	No Room Required
11:30 to 12:00	Dynamics of 3D sheared/vibrated flows	Room 1
12:00 to 12:30	Sérgio Faria Granular media modelled as mixtures with continuous diversity	Room 1
12:30 to 13:30	Lunch at Wolfson Court	No Room Required
14:00 to 15:00	Ioannis Vardoulakis National and Capodistrian University of Athens "Stress-dilatancy" hypothesis revisited	Room 1
15:00 to 15:30	Tea \& Poster Session II	No Room Required
15:30 to 16:00	Colin Thornton University of Birmingham An examination of shear bands by discrete particle simulations	Room 1
16:00 to 16:30	Denis Fenistein Experimental observations of shear bands	Room 1
16:30 to 17:00	Peter Vollmoeller Influence of bed-friction effects in saturated granular flows: A Numerical Experiment	Room 1
18:45 to 19:30	Dinner at Wolfson Court (Residents Only)	No Room Required

Friday 26th September 2003
09:00 to 10:00	Hayley Shen Dry shear flows	Room 1
10:00 to 10:30	Wolfgang Losert University of Maryland, College Park Particle segregation in rotating cylinders	Room 1
10:30 to 11:00	Kook-Young Yoon Cornell University Segregation of binary mixtures in steady inclined flows	Room 1
11:00 to 11:30	Coffee	No Room Required
11:30 to 12:00	Maria Aguirre Avalanche onset on a 2D granular packing: preliminary results	Room 1
12:00 to 12:30	Nicolas Taberlet A super-stable granular heap in a thin channel	Room 1
12:30 to 13:30	Lunch at Wolfson Court	No Room Required
14:00 to 15:00	Mike Cates University of Edinburgh Flow and arrest of dense colloidal suspensions	Room 1
15:00 to 15:30	Tea	No Room Required
15:30 to 16:00	Jasna Brujic University of Cambridge Measurements of the Force Distribution in a Compressed Emulsion	Room 1
16:00 to 16:30	Peter Eshuis Granular leidenfrost phenomenon: density inversion in a granular gas	Room 1
16:30 to 17:00	Pedro Reis University of Manchester Gases, liquids, and crystals in granular segregation	Room 1
18:45 to 19:30	Dinner at Wolfson Court (Residents Only)	No Room Required

Speakers

Andreas Acrivos
Maria Aguirre
Bob Behringer Duke University
Tobias Boehm
Jasna Brujic University of Cambridge
Joseph Calantoni NASA - Stennis Space Center
Mike Cates University of Edinburgh
Francois Chevoir Laboratoire Navier
Donald Drew Rensselaer Polytechnic Institute
Peter Eshuis
Sérgio Faria
Denis Fenistein
Daniel Hanes USGS Pacific Science Center
Kimberley Hill
Richard Iverson
Christophe Josserand
Peter King University of Nottingham
Nina Kirchner University of Kaiserslautern
Curt Koenders
Luigi La Ragione Politecnico di Bari
Wolfgang Losert University of Maryland, College Park
Michel Louge Cornell University
Jim McElwaine University of Cambridge
John Melrose
Marina Neophytou University of Cambridge
Jose Miguel Pasini Cornell University
E. Bruce Pitman University at Buffalo
Olivier Pouliquen
Jean Rajchenbach
Pedro Reis University of Manchester
Hayley Shen
Michael Swift University of Nottingham
Nicolas Taberlet
Colin Thornton University of Birmingham
Brian Utter Duke University
Alexandre Valance
Ioannis Vardoulakis National and Capodistrian University of Athens
Peter Vollmoeller
Kook-Young Yoon Cornell University
Duan Zhang Los Alamos National Laboratory

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