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Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN:
1-56700-135-1 (Print)

DIRECT NUMERICAL SIMULATION OF PARTICLE-DRIVEN GRAVITY CURRENTS

Frieder Necker
Institute of Fluid Dynamics ETH Zurich ETH Zentrum, CH-8092 Zurich, Switzerland

Carlos Hartel
Institute of Fluid Dynamics ETH Zurich ETH Zentrum, CH-8092 Zurich, Switzerland

Leonhard Kleiser
Institute of Fluid Dynamics ETH Zurich ETH Zentrum, CH-8092 Zurich, Switzerland

Eckart Meiburg
Department of Mechanical Engineering University of California at Santa Barbara Santa Barbara, CA 93106, USA

Abstract

Particle-driven gravity currents are examined by means of two-dimensional numerical simulations based on highly accurate integration schemes for the fluid-phase equations. Two different approaches are employed to describe the particulate phase, namely a Eulerian treatment and a Lagrangian particle-tracking technique. Good agreement is demonstrated between the two approaches for small particle Stokes numbers.