Hydrodynamics study in a plane ultrafiltration module using an electrochemical method and particle image velocimetry visualization |
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Authors: | C Gaucher P Legentilhomme P Jaouen J Comiti J Pruvost |
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Institution: | (1) GEPEA, Laboratoire de Génie des Procédés – Environnement Agroalimentaire UMR-MA 100, CRTT, BP 406 44602 Saint-Nazaire Cedex, France e-mail: legenti@lgp.univ-nantes.fr, FR |
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Abstract: | The wall shear stress is determined at the surface of a plane sheet of Plexiglas, taking the place of a membrane, using an
electrochemical method. Several microelectrodes are mounted flush to this plane plate, and maps of shear stress are determined
for two inlet and outlet configurations and three channel heights. The heterogeneity of the wall shear stress is observed
for both configurations. Furthermore, the study of the turbulence features of the flow shows a decreasing fluctuating rate
of velocity gradient when the channel height is decreased. The wall velocity gradients and turbulent intensity rates analysis
are confirmed by a flow visualization using the particle image velocimetry method.
Received: 25 September 2000 / Accepted: 23 April 2001 |
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