Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session M14: Aerodynamics: General
8:00 AM–9:57 AM,
Tuesday, November 20, 2018
Georgia World Congress Center Room: B301
Chair: Vibhav Durgesh, California State University, Northridge
Abstract ID: BAPS.2018.DFD.M14.8
Abstract: M14.00008 : Drag on flat plates of arbitrary porosity*
9:18 AM–9:31 AM
An analytical model for the prediction of the drag on a plate of arbitrary porosity (actuator disk) is introduced. The flow kinematics are determined using potential flow theory, along with several conditions to render the flow field realistic. Drag is then calculated under the constraints of mass, momentum and energy balance. The predictions exhibit convincing agreement with experimental observations over a wide range of porosities, including the solid plate case, as long as shedding is absent or suppressed. The developed model offers better predictions of the drag and wake velocities compared to the classical Betz model, and therefore can replace the latter in blade element momentum theory (BEM) algorithms, widely used for the prediction of wind-turbine loads and power generation.
*This research was funded by the National Science Foundation grant CBET-1652583 (Program Manager Ronald Joslin).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.M14.8
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