Summary
Within the framework of the DFG transition programme, the Institute for Aerospace Engineering (ILR) of the Dresden University of Technology (TUD) investigates the spreading of disturbances downstream of a point-shaped source in a laminar boundary layer on a flat plate.
The measurements were performed with hot wire probes on the transition test configuration in the low speed wind tunnel of the TUD. Two different configurations of a point source have been examined so far. A circular arrangement of six cannulas (0.2 mm wide) is not appropriate in the current set up because the disturbances were damped out immediately. A short slot (0.2×5 mm) however, has provided useful results.
The downstream development of amplitude and phase of the artificial disturbances is described in detail.
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Frey, J., Buckisch, R., Müller, L., Grundmann, R. (2002). Experimental Investigation on the Behaviour of Disturbances Emitted from a Point Source in a Laminar Boundary Layer. In: Wagner, S., Rist, U., Heinemann, HJ., Hilbig, R. (eds) New Results in Numerical and Experimental Fluid Mechanics III. Notes on Numerical Fluid Mechanics (NNFM), vol 77. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-45466-3_27
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DOI: https://doi.org/10.1007/978-3-540-45466-3_27
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