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Application of Time-Shifted Boundary Conditions to a 3D Euler/Navier-Stokes Aeroelastic Code FREE

[+] Author Affiliations
R. Srivastava, Milind A. Bakhle, Theo G. Keith, Jr.

The University of Toledo, Toledo, OH

G. L. Stefko

NASA Lewis Research Center, Cleveland, OH

Paper No. 98-GT-042, pp. V005T14A009; 8 pages
doi:10.1115/98-GT-042
From:
  • ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education
  • Stockholm, Sweden, June 2–5, 1998
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7866-8
  • Copyright © 1998 by ASME

abstract

In the present work the unsteady aerodynamic characteristics of harmonically oscillating fan blades are investigated by applying a time-shifted boundary condition at the periodic boundaries. The direct-store method is used to implement the time-shifted boundary condition in a time-marching Euler/Navier-Stokes solver. Inviscid flow calculations for a flat plate helical fan, in a single-blade passage domain, are used to verify the analysis. The results obtained show good correlation with other published results as well as with the same solver using multiple blade passages stacked together. Significant savings in computer time is realized, especially for smaller phase angles.

Copyright © 1998 by ASME
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