Local pressure difference over a NACA0018 Airfoil with cavity using acoustic forcing

W.F.J. Olsman, M.M.E. Osch, van, A. Hirschberg, R.R. Trieling, J.F.H. Willems

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

Abstract

The in uence of a cavity on the steady and unsteady local pressure di??erence over a NACA0018 airfoil is investigated experimentally and compared to numerical calculations. In the experiments a new experimental method is used, which allows Strouhal numbers at which self-sustained oscillation of cavity ows is expected. The airfoil is ??xed to the wind tunnel and the ow is modulated transversally to the main ow by an acoustic standing wave generated by loudspeakers. The objective is obtain insight into the dynamical behavior of an airfoil with a cavity by comparison of experimental data to the results of a two- dimensional numerical Euler code. In the Strouhal range from 2.5 up to 10, based on the semi-chord, both experiment and numerical simulation do not show a strong e??ect of the cavity on the dynamical response of the wing. This response is dominated by the added mass of the wing.
Original languageEnglish
Title of host publicationProceedings of the 47th AIAA Aerospace Sciences Meeting, 5-8 January, 2009, Orlando, Florida, USA
Place of PublicationOrlando, USA
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Publication statusPublished - 2009
Event47th AIAA Aerospace Sciences Meeting, January 5-8, 2009, Orlando, FL, USA - Orlando, FL, United States
Duration: 5 Jan 20098 Jan 2009

Conference

Conference47th AIAA Aerospace Sciences Meeting, January 5-8, 2009, Orlando, FL, USA
CountryUnited States
CityOrlando, FL
Period5/01/098/01/09

Fingerprint Dive into the research topics of 'Local pressure difference over a NACA0018 Airfoil with cavity using acoustic forcing'. Together they form a unique fingerprint.

  • Cite this

    Olsman, W. F. J., Osch, van, M. M. E., Hirschberg, A., Trieling, R. R., & Willems, J. F. H. (2009). Local pressure difference over a NACA0018 Airfoil with cavity using acoustic forcing. In Proceedings of the 47th AIAA Aerospace Sciences Meeting, 5-8 January, 2009, Orlando, Florida, USA American Institute of Aeronautics and Astronautics Inc. (AIAA).