Spanwise vorticity measurements in a perturbed boundary layer

Title: Spanwise vorticity measurements in a perturbed boundary layer
Creator: Oyewola, Olanrewaju; Djenidi, Lyazid; Antonia, Robert Anthony
Relation: Experiments in Fluids Vol. 39, no. 1, p. 152-155
Publisher: Springer International
Resource Type: journal article
Date: 2005
Description: Hot-wire measurements of the spanwise vorticity fluctuation omega(z) have been carried out in a turbulent boundary layer subjected to concentrated suction, applied through a porous wall strip. The results indicate that, relative to the no-suction case, the rms value of omega(z) is significantly reduced in the near-wall region, with this reduction increasing with the suction rate sigma. The reduction near the wall suggests an alteration in the dynamics of the layer. As the Reynolds number increases, the dynamics of the layer in the near-wall region become more intense and suction becomes less effective.
Subject: localized wall suction; flow; turbulence; probes
Identifier: uon:488
Identifier: http://hdl.handle.net/1959.13/25252
Identifier: ISSN:0723-4864
Language: eng