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: Contribution to conferencePaperpeer-review

5 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)
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
Country/TerritoryUnited States
CityReno
Period1/12/981/15/98

ASJC Scopus subject areas

  • General Engineering
  • Space and Planetary Science

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