Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Low-frequency spectra of the wall shear stress and wall pressure in a turbulent boundary layer
Ist Teil von
AIAA journal, 1991-04, Vol.29 (4), p.526-530
Ort / Verlag
Reston, VA: American Institute of Aeronautics and Astronautics
Erscheinungsjahr
1991
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Measurements of the autospectra of the fluctuating wall shear stress and wall pressure in a fully developed turbulent boundary layer at Reynolds numbers of 8200 and 13,400 are presented. The frequency ranges over which the pressure and shear stress spectra are accurately resolved are discussed. For these frequencies, the spectra compare favorably with published results at comparable Reynolds numbers. The method used to calibrate the hot-film wall shear stress transducers, based upon the measured mean velocity profiles, is presented in detail. This technique is believed to be the most accurate for high-Reynolds-number turbulent boundary layers of the type investigated here. The error involved in the determination of the mean wall shear stress is shown to be the limiting factor in determining the absolute spectral levels of the fluctuating wall shear stress. (Author)