Testing the outflow theory of Malcherek by slit weir data

FERRO V., AYDIN İ.

FLOW MEASUREMENT AND INSTRUMENTATION, vol.59, pp.114-117, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 59
  • Publication Date: 2018
  • Doi Number: 10.1016/j.flowmeasinst.2017.12.003
  • Journal Name: FLOW MEASUREMENT AND INSTRUMENTATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.114-117
  • Keywords: Slit weirs, Dimensional analysis, Discharge measurements
  • Middle East Technical University Affiliated: Yes

Abstract

In this paper the flow-process of a slit weir is analyzed by the outflow theory of Malcherek. Average flow velocity over the slit weir is expressed in terms of head over weir and the momentum correction coefficient. The theoretically deduced stage-discharge formula was then calibrated using experimental data obtained for a ratio between the weir and the channel width ranging from 0.05 to 0.25. The deduced stage-discharge relationship allows to measure discharge values characterized by errors which are, for 91% of the measured values, less than or equal to 5%.