Author:
FISCHER PAUL F.,LEAF GARY K.,RESTREPO JUAN M.
Abstract
The lift and drag forces on an isolated particle resulting from an oscillating wall-
bounded flow, are approximated using direct numerical simulation and extrapolation
techniques. We also confirm the existence of anomalies in the lift force, which arise
from the interaction of the vortical field with the particle. Anomalies can also occur
for computational reasons and these are discussed as well.This study was motivated by a long-standing question about the importance of lift
forces in the dynamics of sediments in oceanic settings. To answer this question we
use the numerically generated data as well as extrapolations to compute the ratio
of the lift to buoyancy forces on a particle. This analysis suggests that for particles
and oceanic conditions typical of the nearshore, the lift force can play a role in the
dynamics of sedimentary beds.
Publisher
Cambridge University Press (CUP)
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics
Cited by
22 articles.
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