Discharge prediction in flow measurement flumes with different downstream transition slopes

GÖĞÜŞ M., Al-Khatib I. A., Atalay A. E., Khatib J. I.

FLOW MEASUREMENT AND INSTRUMENTATION, cilt.47, ss.28-34, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 47
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.flowmeasinst.2015.11.004
  • Dergi Adı: FLOW MEASUREMENT AND INSTRUMENTATION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.28-34
  • Anahtar Kelimeler: Discharge estimation, Empirical predictive models, Compound channel, Coefficient of discharge, Approach velocity coefficient
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Experimental testing of 9 different rectangular compound cross-section flow measurement flumes with different downstream slopes was conducted to yield the coefficient of discharge and the approach velocity coefficient. The aim of the experimental research was the determination of stage-discharge relationship in compound cross-section flow measurement flumes with different downstream slopes. One empirical predictive model for each of the coefficient of discharge and the approach velocity coefficient for the 9 cross-sections have been derived using one dimensionless parameter for the coefficient of discharge and another one dimensionless parameter for the approach velocity coefficient as the single independent variable. This approach is preferred as it allows the estimation of discharge by only measuring the water depth at the head measurement section. All obtained predictive models statistics have indicated the high reliability of the derived models in estimating discharge in an open channel flume of a rectangular compound cross-section using the predicted coefficients. (C) 2015 Elsevier Ltd. All rights reserved.