Detail publikačního výsledku

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

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

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2015

Vydáno

01.04.2014

Nakladatel

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

Místo

Bratislava

ISSN

0042-790X

Periodikum

Journal of Hydrology and Hydromechanics

Svazek

62

Číslo

2

Stát

Slovenská republika

Strany od

145

Strany do

149

Strany počet

5

URL

http://www.degruyter.com/view/j/johh.2014.62.issue-2/johh-2014-0014/johh-2014-0014.xml?format=INT

Plný text v Digitální knihovně

http://hdl.handle.net/11012/102748

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",
  journal="Journal of Hydrology and Hydromechanics",
  year="2014",
  volume="62",
  number="2",
  pages="145--149",
  doi="10.2478/johh-2014-0014",
  issn="0042-790X",
  url="http://www.degruyter.com/view/j/johh.2014.62.issue-2/johh-2014-0014/johh-2014-0014.xml?format=INT"
}

Dokumenty

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