Turbulence in a Two-Dimensional Wall-Jet - Experiments and Modeling,
Paper i proceeding, 1992

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.

Författare

Hans Abrahamsson

Chalmers, Institutionen för termo- och fluiddynamik

Helge Andersson

Bert Johansson

Chalmers, Institutionen för termo- och fluiddynamik

Lennart Löfdahl

Chalmers, Institutionen för termo- och fluiddynamik

13th Turbulence Conference in Missouri-Rolla.

Ämneskategorier

Strömningsmekanik och akustik