Publication detail

Discharge coefficient of a rectangular sharp-edged broad-crested weir

ZACHOVAL, Z. KNÉBLOVÁ, M. ROUŠAR, L. RUMANN, J. ŠULC, J.

Original Title

Discharge coefficient of a rectangular sharp-edged broad-crested weir

English Title

Discharge coefficient of a rectangular sharp-edged broad-crested weir

Type

journal article in Web of Science

Language

en

Original Abstract

This paper is concerned with the determination of the relationship for the calculation of the discharge coefficient at free overflow over a rectangular sharp-edged broad-crested weir without lateral contraction. The determination was made on the basis of new measurement in a range of the relative thickness of the weir from 0.12 to 0.30 and newly in a large range of relative height of the weir extremely from 0.24 to 6.8 which greatly expands the application possibilities of low weirs. In addition, the effects of friction and surface tension on the value of the discharge coefficient were evaluated as well as the effect of the relative thickness of the weir. The new equation for discharge coefficient, expressed using the relative height of the weir, was subjected to verification made by an independent laboratory which confirmed its accuracy.

English abstract

This paper is concerned with the determination of the relationship for the calculation of the discharge coefficient at free overflow over a rectangular sharp-edged broad-crested weir without lateral contraction. The determination was made on the basis of new measurement in a range of the relative thickness of the weir from 0.12 to 0.30 and newly in a large range of relative height of the weir extremely from 0.24 to 6.8 which greatly expands the application possibilities of low weirs. In addition, the effects of friction and surface tension on the value of the discharge coefficient were evaluated as well as the effect of the relative thickness of the weir. The new equation for discharge coefficient, expressed using the relative height of the weir, was subjected to verification made by an independent laboratory which confirmed its accuracy.

Keywords

Broad-crested weir; Discharge coefficient; Relative height of weir.

RIV year

2014

Released

01.04.2014

Publisher

Institute of Hydrology of the Slovak Academy of Sciences, Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic

Location

Bratislava

Pages from

145

Pages to

149

Pages count

5

URL

Full text in the Digital Library

Documents

BibTex


@article{BUT105675,
  author="Zbyněk {Zachoval} and Michaela {Knéblová} and Ladislav {Roušar} and Ján {Rumann} and Jan {Šulc}",
  title="Discharge coefficient of a rectangular sharp-edged broad-crested weir",
  annote="This paper is concerned with the determination of the relationship for the calculation of the discharge coefficient at free overflow over a rectangular sharp-edged broad-crested weir without lateral contraction. The determination was made on the basis of new measurement in a range of the relative thickness of the weir from 0.12 to 0.30 and newly in a large range of relative height of the weir extremely from 0.24 to 6.8 which greatly expands the application possibilities of low weirs. In addition, the effects of friction and surface tension on the value of the discharge coefficient were evaluated as well as the effect of the relative thickness of the weir. The new equation for discharge coefficient, expressed using the relative height of the weir, was subjected to verification made by an independent laboratory which confirmed its accuracy.",
  address="Institute of Hydrology of the Slovak Academy of Sciences, Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic",
  chapter="105675",
  doi="10.2478/johh-2014-0014",
  institution="Institute of Hydrology of the Slovak Academy of Sciences, Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic",
  number="2",
  volume="62",
  year="2014",
  month="april",
  pages="145--149",
  publisher="Institute of Hydrology of the Slovak Academy of Sciences, Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic",
  type="journal article in Web of Science"
}