Investigation of dynamic stall characteristics for flow past an oscillating airfoil at various reduced frequencies by simultaneous PIV and surface pressure measurements
Year: 2013
Type: conference-paper
Abstract: Wind tunnel experiments were carried out at low speed aerodynamics lab at IIT Kanpur to investigate dynamic stall characteristics for a flow past an oscillating NACA 0015 airfoil at various reduced frequencies (k). The NACA airfoil model was design and developed to incorporate simultaneous surface pressure measurement at the mid-span of the airfoil model along the chord and 2D PIV measurements of the flow-field downstream near the Trailing Edge (TE) vicinity of the oscillating airfoil model subjected to the higher reduced frequency k up to 0.5. The main objective of this work was to critically assess the effect of k in the unsteady domain from fully develop to partially develop dynamic stall regimes. For a given constant Reynolds number Re of 0.2E06, the instantaneous 2D PIV images were captured for an oscillating airfoil at varied k. These images have been critically assessed to provide qualitative information and flow visualization of the flow field to trace various dynamic stall events which mainly includes the formation, growth and shedding of Dynamic Stall Vortex (DSV) from the TE.
Authors: Deepakkumar M. Sharma, Kamal Poddar
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W91166583