Wind tunnel tests for vortex generators mitigating leading-edge roughness on a 30% thick airfoil

R. Gutiérrez, E. Llórente, F. Echeverría, D. Ragni

Research output: Contribution to journalConference articleScientificpeer-review

1 Citation (Scopus)
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Abstract

In this study, the aerodynamic performance of a thick airfoil is analysed, after installing leading-edge roughness to emulate a severe state on the airfoil surface. The impact on aerodynamic coefficients has been quantified using two roughness methods: zig-zag tape and sandpaper. Wind tunnel tests are carried out at a Reynolds number of 3•106. At low angles of attack, zig-zag tape and sandpaper provide comparable lift and drag coefficients but significant variations of these coefficients are obtained for high angles of attack. Stalled flow is the cause of the most significant variation on the airfoil performance between smooth and rough surface states. Vortex generators are adapted to recover the lift coefficient value previously given by the airfoil under smooth conditions. As a result, vortex generators are able to reduce the loss of lift and the sensitivity of the airfoil to the rough state.

Original languageEnglish
Article number052058
Number of pages10
JournalJournal of Physics: Conference Series
Volume1618
Issue number5
DOIs
Publication statusPublished - 22 Sep 2020
EventScience of Making Torque from Wind 2020, TORQUE 2020 - Online, Virtual, Online, Netherlands
Duration: 28 Sep 20202 Oct 2020

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