Numerical investigation of inertial sphere impaction on a cylinder in subcritical flow

This study examined the accuracy of a Lagrangian scheme for simulating both the motion and wall impaction of neutrally buoyant inertial spheres (8.85 St 18.04) moving in the subcritical regime (Re = 10,972 and 22,366) of flows past a circular cylinder. The accuracy of the eddy-resolving simulations...

Full description

Saved in:
Bibliographic Details
Published in:Particulate science and technology 2022-01, Vol.40 (1), p.35-49
Main Authors: Romero-Gomez, P., Singh, R. K., Richmond, M. C., Weissenberger, S.
Format: Article
Language:English
Subjects:
Accuracy
Boundary layers
CFD
Circular cylinders
collision
Collision rates
Lagrangian
Particle tracking
spheres
subcritical
Subcritical flow
trajectory
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study examined the accuracy of a Lagrangian scheme for simulating both the motion and wall impaction of neutrally buoyant inertial spheres (8.85 St 18.04) moving in the subcritical regime (Re = 10,972 and 22,366) of flows past a circular cylinder. The accuracy of the eddy-resolving simulations of the flow field was verified based on available data at nearly comparable flow conditions. The accuracy of the particle tracking scheme was verified with respect to corresponding experimental data in a laboratory flume. Particle dispersion en route to the circular cylinder is mostly driven by the flow disturbance from the particle injector tube. The trends in collision rates are largely explained by the rate of particle entertainment into the boundary layer around the cylinder and the inertial condition of the spheres in this proximity region-both of which can be better assessed by post-processing of the numerical outcomes. The primary incentive to undertake this work was the need for validating a particle-based method for quantifying the hydraulic stressors leading to bodily damage of fish passing flows influenced by hydraulic infrastructure.
ISSN:0272-6351
1548-0046
DOI:10.1080/02726351.2021.1904308