Discharge Coefficients for Radial-Gated Ogee Spillways by Laboratory Data and by Design of Small Dams

Haktanir T., Khalaf M. A.

TEKNIK DERGI, vol.32, no.4, pp.10919-10945, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 4
  • Publication Date: 2021
  • Doi Number: 10.18400/tekderg.540640
  • Journal Name: TEKNIK DERGI
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.10919-10945
  • Keywords: Discharge coefficient for partially-opened radial-gated spillways
  • Erciyes University Affiliated: Yes

Abstract

Using the measured data on 15 laboratory models in USA, six models and one prototype in Turkey, the discharge coefficients (C's) of radial-gated ogee spillways for various gate openings and lake water surface elevations are computed. Comparison of these C's for 22 spillways with the ones given by Figure 9-31 of Design of Small Dams does not show close agreements. It is determined that C depends on both the angle O and the ratio d/H-1, rather than O only where d and H-1 are the gate opening and the upstream head, and statistically significant regression equations are computed individually for each one of 22 cases.