The University of Southampton
University of Southampton Institutional Repository

Transitional separation bubbles and unsteady aspects of aerofoil stall

Sandham, N.D. (2008) Transitional separation bubbles and unsteady aspects of aerofoil stall Aeronautical Journal, 112, (1133), pp. 395-404.

Record type: Article


A time-accurate solution method for the coupled potential flow and integral boundary-layer equations is used to study aerofoils near stall, where laboratory experiments have shown high-amplitude low-frequency oscillations. The laminar-turbulent transition model incorporates an absolute instability formulation, which allows the transition process in separation bubbles to be sustained in the absence of upstream disturbances, in agreement with recent direct numerical simulations. The method is demonstrated to capture large scale flow oscillations with Strouhal numbers and amplitudes comparable to experiments. The success of this particular physical model suggests that bubble bursting is primarily due to a potentialflow/ boundary-layer interaction effect, in which relatively simple models of boundary layer transition and turbulence suffice to describe the key phenomena.

PDF SandhamAeroJ2008.pdf - Version of Record
Download (417kB)

More information

Submitted date: 16 November 2007
Published date: July 2008
Keywords: laminar separation bubble, transitional separation bubble, aerofoil performance, airfoil performance, stall
Organisations: Aerodynamics & Flight Mechanics


Local EPrints ID: 55691
ISSN: 0001-9240
PURE UUID: 67f4c284-b90e-4083-ac5c-86015cfa984e

Catalogue record

Date deposited: 05 Aug 2008
Last modified: 17 Jul 2017 14:32

Export record

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 supports OAI 2.0 with a base URL of

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.