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Turbulence in a Two-Dimensional Wall-Jet - Experiments and Modeling,

Hans Abrahamsson (Institutionen för termo- och fluiddynamik) ; Helge Andersson ; Bert Johansson (Institutionen för termo- och fluiddynamik) ; Lennart Löfdahl (Institutionen för termo- och fluiddynamik)
13th Turbulence Conference in Missouri-Rolla. (1992)
[Konferensbidrag, refereegranskat]

An experimental and numerical investigation of the turbulence field in a two-dimensional wall-jet has been carried out in a well-defined geometry. The measurements were performed using a hot-wire technique and the calculations were carried out with a standard k-ε model as well as an algebraic stress model (ASM), using elliptic solvers. For the mean velocity field, good agreements were found between the measurements and the calculations. The measurements of the turbulence intensities reveal two maxima in the stream-wise and span-wise components, while only one maximum was found in the normal component. Also in the shear stress two maxima were found. A comparison between calculations and measurements indicates that improved turbulence models are needed.



Denna post skapades 2010-08-27.
CPL Pubid: 125281

 

Institutioner (Chalmers)

Institutionen för termo- och fluiddynamik (1989-2004)

Ämnesområden

Strömningsmekanik

Chalmers infrastruktur