Effect of simulated scalloped ice on the aerodynamics of a swept-wing at low-reynolds number

Navdeep Sandhu, Mohamad Reza Soltani, Michael B. Bragg, Christopher W. Lum, Brian S. Woodard, Andy P. Broeren, Sam Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper studied the aerodynamic effects of a single scalloped ice accretion and a low fidelity ice-shape simulation. These data were compared to the aerodynamics of a clean 8.9% scale CRM65 semispan wing model at a Reynolds number of 1.6 x 106. The clean wing experienced an aggressive, tip-first stall and showed a small, strong leading-edge vortex at lower angles-of-attack while the iced cases showed larger, seemingly weaker leading-edge vortices at similar angles. The size of these vortices is larger for the low-fidelity ice shape. The stall pattern for the iced cases was also tip-first, but more gradual than the clean wing. The high-fidelity ice shape produced streamwise flow features over the upper surface of the wing due, in part, to flow moving through gaps that exist in the ice shape geometry that disrupted the formation of the leading-edge vortices, changing the aerodynamics of the wing. These gaps do not exist in the low-fidelity shape. The low-fidelity scallop ice shape was non-conservative in its aerodynamic penalties compared to the full high-fidelity case.

Original languageEnglish (US)
Title of host publication2018 Atmospheric and Space Environments Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105586
DOIs
StatePublished - 2018
Event10th AIAA Atmospheric and Space Environments Conference, 2018 - Atlanta, United States
Duration: Jun 25 2018Jun 29 2018

Publication series

Name2018 Atmospheric and Space Environments Conference

Conference

Conference10th AIAA Atmospheric and Space Environments Conference, 2018
Country/TerritoryUnited States
CityAtlanta
Period6/25/186/29/18

ASJC Scopus subject areas

  • Atmospheric Science
  • Space and Planetary Science

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