Structure of turbulence:

This activity has aimed at studies to reveil the effects that various boundary conditions has on the structure of the turbulent motion. For example, the effects of surface roughness, surface injection, favourable and adverse streamwise pressure gradients etc. have been studied. These investigations have been initiated in order to provide reliable experimental data which can be used to test the performance of frequently used turbulence models and the results have been extensively published in the litterature. The table below gives access to the abstracts of a few of these reports.

A turbulent boundary layer near separation P. E. Skåre and P.-Å. Krogstad J. Fluid Mechanics, Vol. 272, 1994	Influence of a strong adverse pressure gradient on the turbulent structure in a boundary layer P.-Å. Krogstad and P. E. Skåre Physics of Fluids, Vol. 7, 1995
Convection velocities in a turbulent boundary layer P.-Å. Krogstad, J. H. Kaspersen and S. Rimestad Physics of Fluids, Vol. 10, 1998	Axisymmetric contraction of fully developed pipe flow L. E. Torbergsen and P.-Å. Krogstad 13th Australasian Fluid Mechanics Conference, Melbourne, 1998
Some effects of localized injection on the turbulence structure in a boundary layer P.-Å. Krogstad and A. Kourakine Physics of Fluids, Vol. 12, 2000	Invariant analysis of pipe flow P.-Å. Krogstad and L.E. Torbergsen J. Flow, Turbulence and Combustion, Vol. 64, 2000
Measurements of the turbulent energy dissipation rate B.R. Pearson, P.-Å. Krogstad and W. van de Water Physics of Fluids, Vol. 14, 2002	Structure inclination angle in a turbulent adverse pressure boundary layer P.-Å. Krogstad and J.H. Kaspersen J. Fluids Engineering, Vol. 124, 2002
Modulation of Near-Wall Turbulence Structure with Wall Blowing and Suction Y.M. Chung,  H.J. Sung and P.-Å. Krogstad AIAA J., Vol. 40, 2002	The loarithmic structure function law in wall-layer turbulence P. A. Davidson, T.B. Nickels and P.-Å. Krogstad J. Fluid Mechanics, Vol. 550, 2006

Other related references:

Experimental investigation of an equilibrium boundary layer in strong adverse pressure gradient

P. E. Skåre, Ph.D. Thesis, NTNU, 1994

A study of coherent structures using wavelet analysis

J. H. Kaspersen, Ph.D. Thesis, NTNU, 1996

Experiments in turbulent pipe flow

L. E. Torbergsen, Ph.D. Thesis, NTNU, 1998

Experimental investigation of turbulent flow in a channel with rough walls

O. M. Bakken, Ph.D. Thesis, NTNU, 2004

The response of a turbulent boundary layer to injection through a porous strip

P.-Å. Krogstad and A. Kourakine, 1st Turbulence and Shear Flow Phenomena, Santa Barbara, 1999

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