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Structure of Flows in Viscoplastic Fluids Mixing

[+] Author Affiliations
Frédéric Savreux, Pascal Jay, Albert Magnin, Jean-Michel Piau

Université de Grenoble, Grenoble Cedex, France

Paper No. FEDSM2002-31448, pp. 31-40; 10 pages
doi:10.1115/FEDSM2002-31448
From:
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 2: Symposia and General Papers, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3616-9 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME

abstract

The laminar isothermal mixing of a viscoplastic fluid is considered in the absence of any free surface and when the material can be modelled using a Bingham constitutive equation. The material is mixed by a rotating cylindrical tank and a fixed anchor impeller. A two-dimensional numerical simulation is performed with a finite elements method. The effects of viscoplasticity and inertia are related to an Oldroyd (Od) and to a Reynolds (Re) number. Stream lines, vortices, yield surfaces and power consumption are shown and analysed depending on the value of Od and Re parameters.

Copyright © 2002 by ASME

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