DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf
ISBN Print: 978-1-56700-262-1
ISSN: 2377-2816
Synchronization of PIV and electrochemical measurements of transfers: application to a wall bounded wake flow downstream of an cylinder
要約
In this work, PIV and Electrochemical techniques were simultaneously used to characterize the dynamics of coherent vortices and wall shear stresses respectively downstream confined obstacles. The Reynolds number was varied between 60 ≤ Re ≤ 250 . PIV was used to obtain the instantaneous velocity components in the obstacle wake (cylinder, square obstacle, and rectangular obstacle). A snapshot Proper Orthogonal Decomposition (POD) was applied to these measured PIV velocity fields. Mass transfer circular probes were placed at the lower wall downstream of the obstacle (only cylinder) in order to also determine the time-evolution of the wall shear stress directly. The technique used in the present case (electrochemical method) is based on the inverse method, applied to the convective-diffusion equation.