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Fluid Mechanics Seminar
Simulations of the turbulent von-Kármán swirling flow with a moving immersed boundary method
Dr. M. Houssem Kasbaoui
Postdoctoral Fellow
Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin
Thursday, September 13, 2018, 3:30 pm
WRW 113

In this talk, I will present on-going work on the numerical characterization of the von-Kármán flow at various Reynolds numbers. The flow is generated in the so-called French Laundry Machine: a cylindrical closed vessel with counter rotating top and bottom disks equipped with curved impellers. The devices generates highly anisotropic turbulence with persistent large-scale coherent structures. The simulation strategy relies on a low mach flow solver coupled with an immersed boundary method. The method is robust and stable for still and moving solids. To analyze the different working regimes, I conducted simulations at four increasing Reynolds numbers 55, 360, 2000 and 4000 by increasing the rotation rate of the disks. The flow structures and symmetries will be analyzed as this flow transitions from laminar to turbulent regimes.

Contact  Dr. Fabrizio Bisetti (512) 471-5696 or fbisetti@utexas.edu

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