Experimental study of turbulent Ekman layer

Damien Sous , Joël Sommeria

This paper reports on laboratory experiments concerning frictional rotating turbulent boundary layer in spin-up flow over flat horizontal bottom. Stereoscopic Particle Image Velocimetry technique is used to obtain two-dimensional three components fluctuating velocity fields. Velocity profiles measured in laminar regime show a remarkable agreement with the Ekman theoretical predictions. Results obtained in turbulent regime confirm the measurement method validity and allow to plan an extensive analysis of the turbulent Ekman layers.

Mots clés: Ekman layer; Turbulence; SPIV

Domaines: Mécanique [physics]

Damien Sous, Joël Sommeria. Experimental study of turbulent Ekman layer. CFM 2007 - 18ème Congrès Français de Mécanique, Aug 2007, Grenoble, France. ⟨hal-03359834⟩