eprintid: 10180127
rev_number: 14
eprint_status: archive
userid: 699
dir: disk0/10/18/01/27
datestamp: 2023-11-03 16:55:20
lastmod: 2024-04-15 14:06:50
status_changed: 2023-11-03 16:55:20
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Dalwadi, Mohit
creators_name: Moreau, Clément
creators_name: Gaffney, Eamonn
creators_name: Ishimoto, Kenta
creators_name: Walker, Benjamin
title: Generalised Jeffery’s equations for rapidly spinning particles. Part 1: Spheroids
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F59
note: © The Author(s), 2024. Published by Cambridge University Press. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0).
abstract: The observed behaviour of passive objects in simple flows can be surprisingly intricate, and is complicated further by object activity. Inspired by the motility of bacterial swimmers, in this two-part study we examine the three-dimensional motion of rigid active particles in shear Stokes flow, focusing on bodies that induce rapid rotation as part of their activity. In Part 1 we develop a multiscale framework to investigate these emergent dynamics and apply it to simple spheroidal objects. In Part 2 (Dalwadi et al., J. Fluid Mech., vol. 979, 2024, A2) we apply our framework to understand the emergent dynamics of more complex shapes; helicoidal objects with chirality. Via a multiple scales asymptotic analysis for nonlinear systems, we systematically derive emergent equations of motion for long-term trajectories that explicitly account for the strong (leading-order) effects of fast spinning. Supported by numerical examples, we constructively link these effective dynamics to the well-known Jeffery's orbits for passive spheroids, deriving an explicit closed-form expression for the effective shape of the active particle, broadening the scope of Jeffery's seminal study to spinning spheroids.
date: 2024-01-25
date_type: published
publisher: Cambridge University Press
official_url: https://doi.org/10.1017/jfm.2023.923
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2103499
doi: 10.1017/jfm.2023.923
lyricists_name: Dalwadi, Mohit
lyricists_id: MDALW30
actors_name: Allington-Smith, Dominic
actors_id: DAALL44
actors_role: owner
full_text_status: public
publication: Journal of Fluid Mechanics
volume: 979
article_number: A1
citation:        Dalwadi, Mohit;    Moreau, Clément;    Gaffney, Eamonn;    Ishimoto, Kenta;    Walker, Benjamin;      (2024)    Generalised Jeffery’s equations for rapidly spinning particles. Part 1: Spheroids.                   Journal of Fluid Mechanics , 979     , Article A1.  10.1017/jfm.2023.923 <https://doi.org/10.1017/jfm.2023.923>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10180127/13/Dalwadi_Generalised%20Jeffery%27s%20equations%20for%20rapidly%20spinning%20particles_VoR2.pdf