Summary
Measurements of the temporal and spatial development of natural and controlled boundary layer instabilities in the linear and weakly nonlinear stage of transition were carded out using a laminar wing glove in-flight and in a wind tunnel. An 74 piezo-sensor-array and a spanwise hot-wire array together with several independent point sources for the controlled experiments were used. Depending on the excitation case, typical structures which characterize fundamental and the oblique breakdown were observed. The results of natural transition show two-dimensional Tollmien- Schlichting waves in the linear stage as well as three-dimensional wave packets in the beginning of nonlinear stage, and were observed during flight and in the wind tunnel. Comparing in-flight and wind tunnel measurements, the disturbance structures are qualitatively similar, but the amplification of 3D instabilities occurs later and more rapidly in the wind tunnel.
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References
Nitsche, W., Suttan, J., Becker, S., Erb, P., Kloker, M., Stemmer, C.: Experimental and Numerical Investigations of Controlled Transition in Low-Speed Free Flight. Aerosp. Sei. Technol. 5 (2001) 245–255
Herr, S., Würz, W., Wörner, A., Rist, U., Wagner, S., Ivanov, A., Kaehanov, Y.: Systematic investigations of 3D acousdc receptivity with respect to steady and unsteady disturbanees. Experiment and DNS. In S. Wagner, M. Kloker, U. Rist, ed.: Recent Results in Laminar-Turbulent Transition-Selected Numerical and Experimental Contributions from the DFG-Sehwerpunktprogramm “Transition” in Germany (NNFM 86), Springer Verlag (2003) 75–90
Baumann, M.: Aktive Dämpfung yon Tollmien-Sehliehting Wellen in einer Fltigelgrenzschicht. In: Fortsehritt-Beriehte VDLReiheT,Nr.372, Düsseldorf, VDI Verlag (1999) Dissertation an der Technischen Universiät Berlin.
Peltzer, I.: Flug-und Windkanalexperimente zur räumlichen Entwieklung yon Tollmien-Schlichting-Instabilitäten in einer Flügelgrenzschicht. Mensch und Buch Vedag, Berlin (2004) Dissertation an der Technischen Universität Berlin.
Suttan, L: Entwicklung und Einsatz yon Multisensor-Piezofolienarrays an Laminarflügeln zur zeiflich und flächig hochauflösenden Messtmg von dynamischen Wandkräften in der Transition. In: Fortschritt-Berichte VDI, Reihe 8, Düsseldorf, VDI Verlag (1999) Dissertation an der Technisehen Universität Berlin.
Drela, M.: Xfoil-User Guide. MIT Aero&Astro Harold Youngren. 6.94 edn. (2001) httpd/raphael.mit.edu/xfoil.
Stemmer, C., Kloker, M.: Interference of Wave Trains with Varying Phase Relations in a Decelerated Two-Dimensional Boundary Layer. In S. Wagner, U. Rist, H.J. Heinemann, R. Hilbig, ed.: New Results in Numerical and Experimental Fluid Mechanics HI (NFM 77), Springer Verlag (2002) 239–246
Schröder, A., Kompenhans, J.: Investigation of Transitional Structures in Artificially Excited Boundary Layer Flows by Means of Stereo and Multi-plane PIV. In S. Wagner, M. Kloker, U. Rist, ed.: Recent Remits in Laminar-Turbulent Transition-Selected Numerical and Experimental Contributions from the DFG-Schwerpunktprogramm “Transition” in Germany (NNFM 86), Springer Verlag (2003) 255–268
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Peltzer, I., Nitsche, W. (2006). In-Flight and Wind Tunnel Investigalions of Instabilities on a Laminar Wing Glove. In: Rath, HJ., Holze, C., Heinemann, HJ., Henke, R., Hönlinger, H. (eds) New Results in Numerical and Experimental Fluid Mechanics V. Notes on Numerical Fluid Mechanics and Multidisciplinary Design (NNFM), vol 92. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-33287-9_28
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DOI: https://doi.org/10.1007/978-3-540-33287-9_28
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