Coherent perturbations in a turbulent boundary layer subjected to a highly adverse pressure gradient

Yuli Lifshitz, David Degani, Anatoli Tumin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Coherent perturbations in a turbulent boundary layer subjected to a highly adverse pressure gradient are considered. The governing equations are the RANS equations with Boussinesq-type closure for the perturbation of background Reynolds stresses. Stability analysis of experimental velocity profiles in a boundary layer over a concave wall demonstrated agreement of theoretical and experimental data. A theoretical model taking into account the interaction of the coherent perturbations and the mean flow via the coherent Reynolds stresses is suggested. It is shown that coherent perturbations affect the mean velocity profile in such a way that the flow becomes more stable.

Original languageEnglish (US)
Title of host publication4th AIAA Theoretical Fluid Mechanics Meeting
StatePublished - 2005
Event4th AIAA Theoretical Fluid Mechanics Meeting - Toronto, ON, Canada
Duration: Jun 6 2005Jun 9 2005

Other

Other4th AIAA Theoretical Fluid Mechanics Meeting
CountryCanada
CityToronto, ON
Period6/6/056/9/05

Fingerprint

turbulent boundary layer
Pressure gradient
pressure gradients
Boundary layers
perturbation
Reynolds stress
velocity distribution
closures
boundary layers
interactions

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics

Cite this

Lifshitz, Y., Degani, D., & Tumin, A. (2005). Coherent perturbations in a turbulent boundary layer subjected to a highly adverse pressure gradient. In 4th AIAA Theoretical Fluid Mechanics Meeting

Coherent perturbations in a turbulent boundary layer subjected to a highly adverse pressure gradient. / Lifshitz, Yuli; Degani, David; Tumin, Anatoli.

4th AIAA Theoretical Fluid Mechanics Meeting. 2005.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lifshitz, Y, Degani, D & Tumin, A 2005, Coherent perturbations in a turbulent boundary layer subjected to a highly adverse pressure gradient. in 4th AIAA Theoretical Fluid Mechanics Meeting. 4th AIAA Theoretical Fluid Mechanics Meeting, Toronto, ON, Canada, 6/6/05.
Lifshitz Y, Degani D, Tumin A. Coherent perturbations in a turbulent boundary layer subjected to a highly adverse pressure gradient. In 4th AIAA Theoretical Fluid Mechanics Meeting. 2005
Lifshitz, Yuli ; Degani, David ; Tumin, Anatoli. / Coherent perturbations in a turbulent boundary layer subjected to a highly adverse pressure gradient. 4th AIAA Theoretical Fluid Mechanics Meeting. 2005.
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