publication . Conference object . 2016

Control of Nonlinear Coupled Electromagnetic Actuators for Active Drag Reduction in Turbulent Flow

Seidler, Florian; Trabert, Julius; Dück, Marcel; van Waasen, Stefan; Schiek, Michael; Abel, Dirk; Castelan, E. B.;
Open Access English
  • Published: 01 Jan 2016
  • Country: Germany
Abstract
The research group FOR1779 “active drag reduction via wavy surface oscillations” develops robust methods for reduction of turbulent friction drag by flow control. The planned concentration on unsteady flow conditions requires a control of the electromagnetic actuator system for generation of transversal surface waves. The bars are positioned in parallel and coupled with an aluminum surface to generate a travelling wave perpendicular to the flow field. The actuator system can be approximately modelled as a system of coupled, damped, driven, one dimensional oscillators with strong nonlinear coupling. The focused parameter range guarantees only an elastic deformati...
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