INVESTIGADORES
SOSA Roberto
congresos y reuniones científicas
Título:
Reduced order models for EHD controlled wake flow
Autor/es:
J. D'ADAMO; R. SOSA; G. ARTANA
Lugar:
Santa Fe
Reunión:
Congreso; X Reunión sobre Recientes Avances en Física de Fluidos y sus Aplicaciones; 2008
Institución organizadora:
Universidad Nacional del Litoral
Resumen:
We present in this work a way to construct reduced order model (ROM) for wakeflows at low Reynolds numbers, from experimental data of particle image velocimetry (PIV).The proper orthogonal decomposition method (POD) allows the extraction of a small numberof functions or modes that describes the flow velocity eld. Galerkin projection of Navier Stokesequations onto these modes leads to obtain a system of ordinary equations, the reduced ordermodel. We take interest particularly in the study of the modications introduced by anelectrohydrodynamic (EHD) actuator on the flow. EHD action is obtained from a gaseousdischerge of dielectric barrier type (DBD), produced by electrodes flush mounted on a cylindersurface. The reduced order model presents as an eective tool in order to analyse the coupledelectrical and hydrodynamic phenomena. We focus on the flow changes considering the voltagebetween the electrodes as a control parameter.