Unsteady lift of thick airfoils in turbulent flow

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

1 Scopus citations

Abstract

Measurements of the unsteady lift forces acting on airfoils in turbulent flow were made to determine the effect of thickness on the gust response and validate a previously developed analytical model. A family of NACA 65-series uncambered airfoils with a range of thickness-to-chord ratios were tested in a water tunnel with grid-generated turbulence. Piezoelectric force gages were used to measure the spectral density of the unsteady lift, and the system was calibrated using an impulse force hammer. An accelerometerbased multiple coherence noise removal technique was employed to eliminate background noise contamination from the facility. The experimental results are shown to agree well with an analytical model of the unsteady lift based on turbulence ingestion theory and an incompressible gust response which accounts for airfoil thickness.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages57-63
Number of pages7
ISBN (Print)9780791843888
DOIs
StatePublished - Jan 1 2010
Event2009 ASME International Mechanical Engineering Congress and Exposition, IMECE2009 - Lake Buena Vista, FL, United States
Duration: Nov 13 2009Nov 19 2009

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume15

Other

Other2009 ASME International Mechanical Engineering Congress and Exposition, IMECE2009
CountryUnited States
CityLake Buena Vista, FL
Period11/13/0911/19/09

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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    Lysak, P. D., Capone, D. E., & Jonson, M. L. (2010). Unsteady lift of thick airfoils in turbulent flow. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009 (pp. 57-63). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 15). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2009-11414