Summary
The flow about a 3D model in a wind tunnel is influenced by the walls and by the model suspension. This has to be accounted for by corrections. The transonic tunnel of DNW Göttingen is equipped with a two-dimensional adaptive test section of 1 ×1 m 2, with flexible top and bottom walls, for 2D and for 3D measurements. For 3D models, the Wedemeyer/Lamarche method is taken for wall adjustment, and this adaptation method produces zero wall interference on the test section centreline. For off-centreline points, residuals can be determined by a wall pressure method, and averages can be taken for corrections. Two models of different scale were used together with 3 different types of support. Nominally, interference-free results were available from NLR-HST. Comparison of present results with the reference data shows the quality of the results, and also the limits of model size. The influence of the different supports was identified.
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© 2004 Springer-Verlag Berlin Heidelberg
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Holst, H., Jacobs, M., Tuschet, S. (2004). Investigation of Wall and Support Interference Using Two TWIG Models of Different Scale. In: Breitsamter, C., Laschka, B., Heinemann, HJ., Hilbig, R. (eds) New Results in Numerical and Experimental Fluid Mechanics IV. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 87. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-39604-8_54
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DOI: https://doi.org/10.1007/978-3-540-39604-8_54
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