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Transient Analyses for Great Falls Hydro Plant

[+] Author Affiliations
Gerald A. Schohl

Tennessee Valley Authority, Norris, TN

Paper No. FEDSM2003-45258, pp. 2857-2864; 8 pages
  • 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


Transient analyses provide estimates of maximum pressure in the Great Falls Unit 1 penstock following load rejection. Additional transient analyses, along with hydrodynamic force and moment coefficients, provide estimates of unsteady loads on the Unit 1 emergency butterfly valve during closure. Position varying force and moment coefficients for a butterfly valve were determined by CFD modeling. A new method for representing turbine and pump-turbine characteristics that involves a slight modification to the standard Suter representation permits linear interpolation between the discrete curves representing data at different wicket gate openings.

Copyright © 2003 by ASME



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