The University of Southampton
University of Southampton Institutional Repository

Two-equation turbulence modelling of a transitional separation bubble

Two-equation turbulence modelling of a transitional separation bubble
Two-equation turbulence modelling of a transitional separation bubble
Calculations of the Reynolds averaged equations using two different turbulence models have been compared with direct numerical simulation of a transitional separation bubble. Three methods of transition modelling were investigated. The first had no transition adjustment, the second involved fixing the transition point at the location observed in the simulation and the third was a direct transformation of a method proposed by Wilcox [1] which involved sensitising the eddy viscosity and transport equations to the local turbulent Reynolds number. The models captured the general features of the flow but were unable to show the recovery behaviour of the flow behind the bubble. Reasons for the failure are discussed using a priori analysis of terms in the model equations.
transition, turbulence modelling, separation
1386-6184
175-91
Howard, R.J.A.
00df2480-b821-4d0a-8f20-c485ea816f6d
Alam, M.
42ac5adc-8234-482f-bf7c-e226a1769fbd
Sandham, N.D.
0024d8cd-c788-4811-a470-57934fbdcf97
Howard, R.J.A.
00df2480-b821-4d0a-8f20-c485ea816f6d
Alam, M.
42ac5adc-8234-482f-bf7c-e226a1769fbd
Sandham, N.D.
0024d8cd-c788-4811-a470-57934fbdcf97

Howard, R.J.A., Alam, M. and Sandham, N.D. (2000) Two-equation turbulence modelling of a transitional separation bubble. Flow Turbulence and Combustion, 63 (1-4), 175-91. (doi:10.1023/A:1009992406036).

Record type: Article

Abstract

Calculations of the Reynolds averaged equations using two different turbulence models have been compared with direct numerical simulation of a transitional separation bubble. Three methods of transition modelling were investigated. The first had no transition adjustment, the second involved fixing the transition point at the location observed in the simulation and the third was a direct transformation of a method proposed by Wilcox [1] which involved sensitising the eddy viscosity and transport equations to the local turbulent Reynolds number. The models captured the general features of the flow but were unable to show the recovery behaviour of the flow behind the bubble. Reasons for the failure are discussed using a priori analysis of terms in the model equations.

This record has no associated files available for download.

More information

Published date: 2000
Keywords: transition, turbulence modelling, separation
Organisations: Engineering Sciences

Identifiers

Local EPrints ID: 21331
URI: http://eprints.soton.ac.uk/id/eprint/21331
ISSN: 1386-6184
PURE UUID: 037539b0-e418-4bb8-b83e-2ec0bf8a1dc3
ORCID for N.D. Sandham: ORCID iD orcid.org/0000-0002-5107-0944

Catalogue record

Date deposited: 14 Mar 2006
Last modified: 16 Mar 2024 03:03

Export record

Altmetrics

Contributors

Author: R.J.A. Howard
Author: M. Alam
Author: N.D. Sandham 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.

×