A Turbulent Plane 2-Dimensional Wall-Jet in a Quiescent Surrounding
Journal article, 1994

An experimental investigation of the turbulence field in a plane two-dimensional wall-jet has been conducted. All measurements were carried out employing hot-wire techniques in a large scale experimental facility. Mean velocities, Reynolds stresses and wall shear stress were determined with slot Reynolds numbers of 1.0*104, 1.5*104 and 2.0*104. The wall-jet was found to be self-preserving, and an asymptotic scale matching was used to show the existence of a short inertial sub layer as compared with a wall boundary layer. Studies of the integral scale development and the turbulent diffusion of shear stress showed a strong interaction between the inner and outer regions of the wall-jet. Using momentum scaling, it was found that the streamwise development of the half-width and maximum mean velocity was independent of the slot Reynolds number.


Hans Abrahamsson

Chalmers, Department of Thermo and Fluid Dynamics

Bert Johansson

Chalmers, Department of Thermo and Fluid Dynamics

Lennart Löfdahl

Chalmers, Department of Thermo and Fluid Dynamics

European Journal of Mechanics/B-Fluids

0997-7546 (ISSN) 1873-7390 (eISSN)

Vol. 13 5 533-556

Subject Categories

Fluid Mechanics and Acoustics

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