Analysis of dynamic stall development on a cross-flow turbine blade
Mukul Dave, Jennifer A. Franck
Abstract
This research analyzes the dynamic stall progression in cross-flow turbine blades demonstrating the effects of flow curvature and induced flow caused by the 360 degree rotation along an axis perpendicular to the freestream. This knowledge contributes to low-order modeling of stall through a proper orthogonal decomposition of the velocity fields, and also explores an alternative control strategy of an intracycle variation in turbine rotation rate that modifies the dynamic stall properties and enhances the power conversion efficiency.
Topics & Concepts
Stall (fluid mechanics)FreestreamTurbinePerpendicularWells turbineMechanicsControl theory (sociology)Turbine bladePhysicsComputer scienceAerospace engineeringEngineeringMathematicsTurbulenceReynolds numberGeometryArtificial intelligenceControl (management)Fluid Dynamics and Turbulent FlowsComputational Fluid Dynamics and AerodynamicsTurbomachinery Performance and Optimization