Discharge Coefficient of Rectangular Broad-Crested Weirs in Narrow Channels with High Relative Length of the Threshold

• Autorzy: Zhuk Volodymyr , Vovk Lesya , Popadiuk Ihor , Matlai Ivan

Identyfikatory

DOI

10.12912/27197050/141877

• Języki publikacji: EN

Abstrakty

EN

Broad-crested weirs (BCW) are commonly used elements of stormwater systems and different open-channel hydraulic structures. Specific features of stormwater drainage channels are small width, low flow depths and, accordingly, small overflow heads at weirs. Dependences of the discharge coefficient of narrow (b = 0.224 m) rectangular sharp-edged broad-crested weirs with vertical walls, threshold height of 0.05 m and threshold length of 0.05–0.2 m were obtained experimentally. The experimental values of the discharge coefficient were approximated by the power-law functions of relative length of the weir. At large values of the relative length of the threshold (L/h> 10), for all weirs was obtained the same tendency of decreasing the discharge coefficient with increasing L/h ratio that can be explained by the enlargement of the hydraulic friction along the weir with increasing L/h ratio.

Słowa kluczowe

EN

broad-crested weir; discharge coefficient; narrow channel; relative length; threshold

• Wydawca: Lubelski Oddział Polskiego Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology ; WNGB Wydawnictwo Naukowe
• Czasopismo: Ecological Engineering & Environmental Technology
• Rocznik: 2021
• Tom: Vol. 22, iss. 6
• Strony: 11--16
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Zhuk Volodymyr

• Institute of Civil Engineering and Building Systems, Lviv Polytechnic National University, 12, S. Bandera Str., Lviv, 79013, Ukraine

• https://orcid.org/0000-0002-2275-0799

autor

Vovk Lesya

• Institute of Civil Engineering and Building Systems, Lviv Polytechnic National University, 12, S. Bandera Str., Lviv, 79013, Ukraine

• https://orcid.org/0000-0001-5396-301X

autor

Popadiuk Ihor

• Institute of Civil Engineering and Building Systems, Lviv Polytechnic National University, 12, S. Bandera Str., Lviv, 79013, Ukraine

• https://orcid.org/0000-0002-8811-7988

autor

Matlai Ivan

• Institute of Civil Engineering and Building Systems, Lviv Polytechnic National University, 12, S. Bandera Str., Lviv, 79013, Ukraine

• https://orcid.org/0000-0002-4300-8825

Bibliografia

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