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Turbulent Flow and Jet-Interaction in a Smooth Lid-Driven-Cavity

[+] Author Affiliations
Stephan Uhkoetter, Stefan aus der Wiesche

Muenster University of Applied Sciences, Steinfurt, Germany

Paper No. FEDSM2014-21026, pp. V01DT27A001; 10 pages
doi:10.1115/FEDSM2014-21026
From:
  • ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels
  • Volume 1D, Symposia: Transport Phenomena in Mixing; Turbulent Flows; Urban Fluid Mechanics; Fluid Dynamic Behavior of Complex Particles; Analysis of Elementary Processes in Dispersed Multiphase Flows; Multiphase Flow With Heat/Mass Transfer in Process Technology; Fluid Mechanics of Aircraft and Rocket Emissions and Their Environmental Impacts; High Performance CFD Computation; Performance of Multiphase Flow Systems; Wind Energy; Uncertainty Quantification in Flow Measurements and Simulations
  • Chicago, Illinois, USA, August 3–7, 2014
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4624-7
  • Copyright © 2014 by ASME

abstract

Experiments were carried out to study the flow and mixing behavior in a smooth lid-driven cavity. In contrast to a simple lid-driven cavity configuration, narrow gaps with finite thickness at inlet and outlet and an additional jet into the cavity were considered, too. It was found that a thin shear layer close to the moving wall occurred whereas the larger part of the flow domain was characterized by large fluctuating eddies. Due to the smooth cavity shape, a pressure gradient in flow direction resulted. The combined effects of that pressure gradient and the moving wall were investigated by measurements of the velocity and fluctuation profiles using Laser-Doppler-Anemometry (LDA). Special attention was spent to the interaction of the inflowing jet with the main flow within the cavity, and different regimes of jet-cavity-interaction were visualized. In addition to the experiments, an extensive Large-Eddy-Simulation (LES) study was conducted, and a reasonable agreement between the experimental data and the LES results were found.

Copyright © 2014 by ASME
Topics: Turbulence , Cavities

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