Article Dans Une Revue Experiments in Fluids Année : 2017

Experimental study of double‑cavity flow

Résumé

The flow through two facing, identical cavities(double-cavity) is characterized experimentally, as theinflow velocity and the distance between the cavities isvaried. Standard 2D2C particle image velocimetry measurementsin the spanwise mid-plane provide informationon the instantaneous and mean velocity flow fields. LaserDoppler velocimetry measurements at several points in thedouble-cavity domain reveal the global character of thestreamwise fluctuating velocity spectra. The flow is characterizedbased on time series, recorded in the shear layer ofone of the cavities, for a wide range of inflow velocities andintercavity distances. In a detailed spectral study, we showhow the shear layer spectra get affected when the two cavitiesare brought closer together. Based on the experimentaldata, a temporal local linear stability analysis was carriedout, which was able to explain why the frequency peaksfor close intercavity distances broaden and move to higherStrouhal numbers.

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Dates et versions

hal-01633918 , version 1 (13-11-2017)

Identifiants

Citer

Florian Tuerke, Luc Pastur, Denisse Sciamarella, François Lusseyran, Guillermo Artana. Experimental study of double‑cavity flow. Experiments in Fluids, 2017, 58, pp.76. ⟨10.1007/s00348-017-2360-8⟩. ⟨hal-01633918⟩
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