Numerical investigation of leading-edge protuberances on high lift, high camber airfoils at low reynolds number

Karsten Hendrickson, Ramesh K. Agarwal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Lift and drag characteristics of a Selig S1223 airfoil with leading edge sinusoidal protuberances are computed using the commercial CFD solver FLUENT and are compared with those of S1223 without protuberances. The amplitudes of the leading edge protuberances are 10%, 8%, and 4% and the wavelengths are 50% and 25% of the mean chord length. For the airfoil with protuberances, the analysis indicates a large decrease in lift in the pre stall region and smaller decreases in the post stall region. Additionally, the critical stall angle of attack is decreased on airfoils with leading edge protuberances. Numerical visualization of the flow indicates a decrease in separation at peaks of the protuberances and an increase in separation at the troughs. The computed results are compared with the experimental data and shows reasonable agreement.

Original languageEnglish
Title of host publicationAIAA AVIATION 2020 FORUM
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages1-19
Number of pages19
ISBN (Print)9781624105982
DOIs
StatePublished - 2020
EventAIAA AVIATION 2020 FORUM - Virtual, Online
Duration: Jun 15 2020Jun 19 2020

Publication series

NameAIAA AVIATION 2020 FORUM

Conference

ConferenceAIAA AVIATION 2020 FORUM
CityVirtual, Online
Period06/15/2006/19/20

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