Evaluation of a Thermal-Tuft Probe for Turbulent Separating and Reattaching Flows

Schwaab, Quentin; Weiss, Julien

doi:10.2514/6.2014-1242

52nd Aerospace Sciences Meeting 2014

DOI: 10.2514/6.2014-1242

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Evaluation of a Thermal-Tuft Probe for Turbulent Separating and Reattaching Flows

Quentin Schwaab

Julien Weiss

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Design, Construction, and Validation of a New Wind Tunnel for the Study of Pressure-Driven Separating and Reattaching Flows

Mohammed-Taifour

Schwaab

Pioton

et al. 2014

52nd Aerospace Sciences Meeting

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The design, construction, and validation of a new academic wind tunnel is described in detail. The wind tunnel is of a classical, blow-down type and generates a pressure-driven, turbulent separation bubble on a flat test surface. The Reynolds number, based on momentum thickness just upstream of separation, is Re θ 5000 at a free-stream velocity of U ref = 25 m/s. The length of the separation bubble has been estimated at 0.42 ± 0.02 m by three different methods. Experimental and numerical results demonstrate the absence of flow separation in the wind-tunnel contraction. This results in a turbulence level of about 0.05% in the test section. Oil-film visualization experiments show that the flow near the wall is strongly three-dimensional in the recirculating region and that the topology of the limiting streamlines is consistent with experiments performed on configurations with fixed separation. Finally, spatial variations of the forward-flow fraction have been documented using a thermal-tuft probe and are shown to compare well with the results of the oil-film visualization.

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Design, Construction, and Validation of a New Wind Tunnel for the Study of Pressure-Driven Separating and Reattaching Flows

Mohammed-Taifour

Schwaab

Pioton

et al. 2014

52nd Aerospace Sciences Meeting

Self Cite

View full text Add to dashboard Cite

show abstract

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Evaluation of a Thermal-Tuft Probe for Turbulent Separating and Reattaching Flows

Cited by 1 publication

References 7 publications

Design, Construction, and Validation of a New Wind Tunnel for the Study of Pressure-Driven Separating and Reattaching Flows

Design, Construction, and Validation of a New Wind Tunnel for the Study of Pressure-Driven Separating and Reattaching Flows

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