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A novel method for identifying vortical structures

A novel method for identifying vortical structures
A novel method for identifying vortical structures
A method for identifying vortices in a 2-D velocity field is developed. A function based on the local angles of velocity with respect to a datum is calculated at each point in the 2-D field. This function is a local minimum at vortex centres. An advanced statistical technique for identifying multiple minima is used to find the minima of this function. The method is used for vortices, calculated using a RANS CFD code (CFX 4.3), forming around a very large crude carrier (VLCC) and the results are seen to be close to the centres of the vortices.
0889-9746
1051-1057
Pemberton, R.
2888aa40-96f5-4b89-9e98-ebf3846e4fc3
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Dodd, T.J.
c65b4f3c-8a21-4895-a91e-624c4b82942b
Rogers, E.
611b1de0-c505-472e-a03f-c5294c63bb72
Pemberton, R.
2888aa40-96f5-4b89-9e98-ebf3846e4fc3
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Dodd, T.J.
c65b4f3c-8a21-4895-a91e-624c4b82942b
Rogers, E.
611b1de0-c505-472e-a03f-c5294c63bb72

Pemberton, R., Turnock, S.R., Dodd, T.J. and Rogers, E. (2002) A novel method for identifying vortical structures. Journal of Fluids and Structures, 16 (8), 1051-1057. (doi:10.1006/jfls.2002.0462).

Record type: Article

Abstract

A method for identifying vortices in a 2-D velocity field is developed. A function based on the local angles of velocity with respect to a datum is calculated at each point in the 2-D field. This function is a local minimum at vortex centres. An advanced statistical technique for identifying multiple minima is used to find the minima of this function. The method is used for vortices, calculated using a RANS CFD code (CFX 4.3), forming around a very large crude carrier (VLCC) and the results are seen to be close to the centres of the vortices.

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More information

Published date: 2002
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 256079
URI: http://eprints.soton.ac.uk/id/eprint/256079
ISSN: 0889-9746
PURE UUID: 431cc6b3-ea07-4501-9a5f-28d6f7f81fe9
ORCID for S.R. Turnock: ORCID iD orcid.org/0000-0001-6288-0400
ORCID for E. Rogers: ORCID iD orcid.org/0000-0003-0179-9398

Catalogue record

Date deposited: 02 Mar 2004
Last modified: 20 Jul 2019 01:25

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Contributors

Author: R. Pemberton
Author: S.R. Turnock ORCID iD
Author: T.J. Dodd
Author: E. Rogers ORCID iD

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