Abstract
A generic, blunt-based rocket model has been investigated experimentally in a subsonic wind tunnel at Ma ∞ = 0.2 and Re = 4.1 ×106 m − 1. Planar and stereoscopic Particle Image Velocimetry (PIV) provided statistical turbulence information on the unsteady wake flow with high spatial resolution. Multiple perpendicular regions of interest (ROI) were combined to generate three-dimensional views. Distinct flow patterns emerged that can be interpreted as a rotationally symmetric extension to the wake flow of two-dimensional blunt bodies. In addition, measurements using Constant Temperature Anemometry (CTA) confirmed the turbulence levels and provided time-resolved data. A characteristic dynamic mode at a Strouhal number of St D = 0.21 was revealed. A cluster of multiple, high-fidelity pressure transducers were mounted in the base plane of the model. The analysis of pressure fluctuations verified the dynamic mode and showed its spatial coherence along several circumferential positions.
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Wolf, C.C., Henke, R., Hörnschemeyer, R. (2013). Investigation on Turbulence Structures in the Wake of a Generic Rocket Configuration. In: Dillmann, A., Heller, G., Kreplin, HP., Nitsche, W., Peltzer, I. (eds) New Results in Numerical and Experimental Fluid Mechanics VIII. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 121. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35680-3_11
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DOI: https://doi.org/10.1007/978-3-642-35680-3_11
Publisher Name: Springer, Berlin, Heidelberg
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