Toggle Main Menu Toggle Search

Open Access padlockePrints

The dynamics of biofouled particles in vortical flows

Lookup NU author(s): Dr Hannah Kreczak, Dr Andrew BaggaleyORCiD, Professor Andrew Willmott



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


© 2023 Elsevier Ltd. When using mathematical models to predict the pathways of biofouled microplastic in the ocean, it is necessary to parametrise the impact of turbulence on their motions. In this paper, statistics on particle motion have been computed from simulations of small, spherical particles with time-dependent mass in cellular flow fields. The cellular flows are a prototype for Langmuir circulation and flows dominated by vortical motion. Upwelling regions lead to particle suspension and particles fall out at different times. The uncertainty of fallout time and a particle's vertical position is quantified across a range of parameters. A slight increase in settling velocities, for short times, is observed for particles with inertia due to clustering in fast downwelling regions for steady, background flow. For particles in time-dependent, chaotic flows, uncertainty is significantly reduced and we observe no significant increase in the average settling rates due to inertial effects.

Publication metadata

Author(s): Kreczak H, Baggaley AW, Willmott AJ

Publication type: Article

Publication status: Published

Journal: Marine Pollution Bulletin

Year: 2023

Volume: 189

Print publication date: 01/04/2023

Online publication date: 26/02/2023

Acceptance date: 09/02/2023

Date deposited: 20/03/2023

ISSN (print): 0025-326X

ISSN (electronic): 1879-3363

Publisher: Elsevier Ltd


DOI: 10.1016/j.marpolbul.2023.114729

ePrints DOI: 10.57711/k6jt-kh33


Altmetrics provided by Altmetric


Funder referenceFunder name
NE/R006776/1Natural Environment Research Council (NERC)