Three-Dimensional Flow Field Investigations on Pitching Low Aspect Ratio Wings at Low Reynolds Numbers

Three-Dimensional Flow Field Investigations on Pitching Low Aspect Ratio Wings at Low Reynolds Numbers

Ehlers, H.
Agocs, J.
Konrath, R.
Korkischko, I.
Schanz, D.
Geisler, R.
Willert, C.
Wokoeck, R.

2013-07-01

Three-dimensional, unsteady flow fields of a pitching low aspect ratio wing were measured by tomographic PIV [6] in air. The analysis of the vortex dominated flow field provides a deeper understanding of vortex interaction and three-dimensionality of the low Reynolds number (Re ? 10,000) flow. In order to recover the complete flow field the measurement set-up was designed to be traversable. A high spatial resolution and a large volume thickness could be achieved by a set of high sensitive sCMOS cameras. A specific feature of this campaign was to locate the measurement domain directly above the flat-plate-wing surface. Evaluation of the measurement data is performed by DLR in-house software. A selection of measurement results of this highly complex flow is presented in this paper.

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Conference proceedings

conference paper

(c) 2013 Ehlers, H.; Agocs, J.; Konrath, R.; Korkischko, I.; Schanz, D.; Geisler, R.; Willert, C.; Wokoeck, R.