Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Frequency analysis of vibrating Gurney flapped airfoil applying a hot- wire

Authors
Abstract
Experimental measurements were conducted on a plunging Eppler 361 Gurney flapped airfoil to study wake structure and dynamic stall phenomenon in the wake. The heights of Gurney flap were 2.6% and 3.3% chord. Special attention was focused on the temporal progressions of the plunging wake for the range of initial AOA in prior and post stall flow conditions. The velocity in the wake was measured by hot-wire anemometry. Surface pressure-measurements as a supplementary data were also carried out to look into the link between the boundary layer flow and the shedding vortical flow. The hot-wire signals were analyzed in frequency domain. The power spectra of dominant frequencies were significantly increased by fitting the gurney flap on the plunging airfoil.
Keywords

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Volume 15, Issue 4 - Serial Number 33
Fluid Mechanics and Heat Transfer
Winter 2014
Pages 39-54

  • Receive Date 20 February 2014