A parametric study of adverse pressure gradient turbulent boundary layers

J. P. Monty, Zambri Harun, I. Marusic

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

There are many open questions regarding the behaviour of turbulent boundary layers subjected to pressure gradients and this is confounded by the large parameter space that may affect these flows. While there have been many valuable investigations conducted within this parameter space, there are still insufficient data to attempt to reduce this parameter space. Here, we consider a parametric study of adverse pressure gradient turbulent boundary layers where we restrict our attention to the pressure gradient parameter, β, the Reynolds number and the acceleration parameter, K. The statistics analyzed are limited to the streamwise fluctuating velocity. The data show that the mean velocity profile in strong pressure gradient boundary layers does not conform to the classical logarithmic law. Moreover, there appears to be no measurable logarithmic region in these cases. It is also found that the large-scale motions scaling with outer variables are energised by the pressure gradient. These increasingly strong large-scale motions are found to be the dominant contributor to the increase in turbulence intensity (scaled with friction velocity) with increasing pressure gradient across the boundary layer.

Original languageEnglish
Pages (from-to)575-585
Number of pages11
JournalInternational Journal of Heat and Fluid Flow
Volume32
Issue number3
DOIs
Publication statusPublished - Jun 2011
Externally publishedYes

Fingerprint

turbulent boundary layer
Pressure gradient
pressure gradients
Boundary layers
boundary layers
Reynolds number
Turbulence
friction
velocity distribution
turbulence
Statistics
statistics
Friction
scaling

Keywords

  • Adverse pressure gradient
  • Boundary layer
  • Wall-turbulence

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

Cite this

A parametric study of adverse pressure gradient turbulent boundary layers. / Monty, J. P.; Harun, Zambri; Marusic, I.

In: International Journal of Heat and Fluid Flow, Vol. 32, No. 3, 06.2011, p. 575-585.

Research output: Contribution to journalArticle

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