In: Journal of Hydrology and Hydromechanics, vol. 67, no. 4
Zbyněk Zachoval - Jakub Major - Ladislav Roušar - Ján Rumann - Jan Šulc - Jan Jandora
Detaily:
Rok, strany: 2019, 329 - 338
Jazyk: eng
Kľúčové slová:
Modular limit; Relative weir height; Full-width sharp-edged broad-crested weir; Submergence coefficient.
URL originálneho zdroja: http://www.ih.sav.sk/jhh
O článku:
Full-width sharp-edged broad-crested rectangular weirs in the range 0.1 < h/L ≤ 0.3 situated in rectangular
channels are frequently used in submerged flow conditions. To determine the discharge for the submerged flow,
submergence coefficient and modular limit shall be known. This article deals with their determination upon a theoretic
derivation and experimental research. The equation for modular limit has been determined from energy balance with
simplifications. To validate it, extensive experimental research was carried out. However, the derived equation is too
complicated for practical use which is why it was approximated by a simple equation applicable for the limited range.
The equation for submergence coefficient was derived by modifying Villemonte's application of the principle of superposition
and its coefficients were determined using the data from experimental research of many authors. The new system
of equations computes the discharge more accurately than other authors' equations, with the error of approximately
±10% in full range of the measured data.
Ako citovať:
ISO 690:
Zachoval, Z., Major, J., Roušar, L., Rumann, J., Šulc, J., Jandora, J. 2019. Submergence coefficient of full-width sharp-edged broad-crested rectangular
weirs. In Journal of Hydrology and Hydromechanics, vol. 67, no.4, pp. 329-338. 0042-790X (until 2019) . DOI: https://doi.org/10.2478/johh-2019-0022
APA:
Zachoval, Z., Major, J., Roušar, L., Rumann, J., Šulc, J., Jandora, J. (2019). Submergence coefficient of full-width sharp-edged broad-crested rectangular
weirs. Journal of Hydrology and Hydromechanics, 67(4), 329-338. 0042-790X (until 2019) . DOI: https://doi.org/10.2478/johh-2019-0022
O vydaní:
Vydavateľ: VEDA, Publishing House of the Slovak Academy of Sciences, Bratislava, Slovakia
Publikované: 15. 12. 2019