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Simulation of Vortex Instability in a Pipe Trifurcation

[+] Author Affiliations
Albert Ruprecht, Ralf Neubauer, Thomas Helmrich

University of Stuttgart, Stuttgart, Germany

Paper No. FEDSM2003-45438, pp. 2153-2160; 8 pages
doi:10.1115/FEDSM2003-45438
From:
  • ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
  • Volume 1: Fora, Parts A, B, C, and D
  • Honolulu, Hawaii, USA, July 6–10, 2003
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3696-7 | eISBN: 0-7918-3673-8
  • Copyright © 2003 by ASME

abstract

The vortex instability in a spherical pipe trifurcation is investigated by applying a Very Large Eddy Simulation (VLES). For this approach an new adaptive turbulence model based on an extended version of the k-ε model is used. Applying a classical Reynolds-averaged Navier-Stokes-Simulation with the standard k-ε model is not able to forecast the vortex instability. However the prescribed VLES method is capable to predict this flow phenomenon. The obtained results show a reasonable agreement with measurements in a model test.

Copyright © 2003 by ASME
Topics: Simulation , Pipes , Vortices

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