Boundary-layer transition detection and structure identification through surface shear-stress measurements

Keith L. Chapman, Mark S. Reibert, William S. Saric, Mark N Glauser

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

2 Scopus citations

Abstract

Several surface shear-stress measurements are made using hot-film sheet anemometry technology in a three-dimensional, swept-wing boundary layer. Various measurements in the crossflow and streamwise directions are made in regions on the wing surface upstream, through, and downstream of the transition region from laminar to turbulent flow. Advanced analysis techniques including proper orthogonal decomposition (POD), spectra, and spatial correlations are used to identify the presence of flow structure and spatial evolutions within the measured surface shear-stress fields. The resulting spatial eigenmodes from the POD solution across the transition front presents a completely objective method for identifying the start and finish of the transition process in the swept-wing boundary layer. The crossflow POD solutions reveal certain transitional processes and spatial relationships important in understanding flow transition and in developing future flow control algorithms.

Original languageEnglish (US)
Title of host publication36th AIAA Aerospace Sciences Meeting and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
StatePublished - 1998
Externally publishedYes
Event36th AIAA Aerospace Sciences Meeting and Exhibit, 1998 - Reno, United States
Duration: Jan 12 1998Jan 15 1998

Other

Other36th AIAA Aerospace Sciences Meeting and Exhibit, 1998
CountryUnited States
CityReno
Period1/12/981/15/98

ASJC Scopus subject areas

  • Engineering(all)
  • Space and Planetary Science

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    Chapman, K. L., Reibert, M. S., Saric, W. S., & Glauser, M. N. (1998). Boundary-layer transition detection and structure identification through surface shear-stress measurements. In 36th AIAA Aerospace Sciences Meeting and Exhibit [AIAA ] American Institute of Aeronautics and Astronautics Inc, AIAA.