The University of Southampton
University of Southampton Institutional Repository

Application of the VORTFIND algorithm for the identification of vortical flow features around complex three-dimensional geometries

Application of the VORTFIND algorithm for the identification of vortical flow features around complex three-dimensional geometries
Application of the VORTFIND algorithm for the identification of vortical flow features around complex three-dimensional geometries
Accurate prediction of the hydrodynamic forces and moments acting on a manoeuvring marine vehicle using Reynolds averaged Navier–Stokes simulations requires sufficient mesh resolution to capture off-body vortical structures. Because the path of these structures is not known a priori, a vortex identification and capture strategy is required alongside an iterative mesh adaption process. An improved version of the VORTFIND algorithm, which can identify multiple vortices of variable strength and rotational direction using a K-means algorithm is described. The algorithm is applied to velocity fields generated from Reynolds averaged Navier–Stokes simulations to increase the mesh resolution in the vortex core region, ensuring sufficient mesh density to capture the downstream propagation of the vortex for a submarine hull at drift and ship propeller–rudder interaction
0271-2091
1461-1474
Phillips, A.B.
f565b1da-6881-4e2a-8729-c082b869028f
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Phillips, A.B.
f565b1da-6881-4e2a-8729-c082b869028f
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce

Phillips, A.B. and Turnock, S.R. (2013) Application of the VORTFIND algorithm for the identification of vortical flow features around complex three-dimensional geometries. International Journal for Numerical Methods in Fluids, 71 (11), 1461-1474. (doi:10.1002/fld.3720).

Record type: Article

Abstract

Accurate prediction of the hydrodynamic forces and moments acting on a manoeuvring marine vehicle using Reynolds averaged Navier–Stokes simulations requires sufficient mesh resolution to capture off-body vortical structures. Because the path of these structures is not known a priori, a vortex identification and capture strategy is required alongside an iterative mesh adaption process. An improved version of the VORTFIND algorithm, which can identify multiple vortices of variable strength and rotational direction using a K-means algorithm is described. The algorithm is applied to velocity fields generated from Reynolds averaged Navier–Stokes simulations to increase the mesh resolution in the vortex core region, ensuring sufficient mesh density to capture the downstream propagation of the vortex for a submarine hull at drift and ship propeller–rudder interaction

Text
VortfindPaperV5.pdf - Author's Original
Download (2MB)

More information

Published date: April 2013
Organisations: National Oceanography Centre, Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 341997
URI: http://eprints.soton.ac.uk/id/eprint/341997
ISSN: 0271-2091
PURE UUID: 8f4bb3ef-547f-4526-a0a6-145327a79894
ORCID for A.B. Phillips: ORCID iD orcid.org/0000-0003-3234-8506
ORCID for S.R. Turnock: ORCID iD orcid.org/0000-0001-6288-0400

Catalogue record

Date deposited: 09 Aug 2012 11:28
Last modified: 09 Jan 2022 03:17

Export record

Altmetrics

Contributors

Author: A.B. Phillips ORCID iD
Author: S.R. Turnock ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×