Assessment of Equivalence of Small and Large Orifice Computational Models

• Autorzy: Kubrak M.

Identyfikatory

DOI

10.1515/heem-2015-0020

• Języki publikacji: EN

Abstrakty

EN

The aim of this paper was to analyze theoretical aspects of calculating steady water flow through unsubmerged circular orifices. Theoretical analysis shows that the values of discharge obtained by using formulas intended for small orifices are greater than those calculated using formulas for large orifices. These differences attain a maximum value when the water level reaches the upper edge of the orifice, and decrease when water head increases. It has been proven that the volumetric flow rate for circular unsubmerged orifices can be calculated by formulas for small orifices when the water level above the center of gravity is at least four times as high as the diameter of the orifice.

Słowa kluczowe

EN

orifice; velocity; flow; computational models

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2015
• Tom: Vol. 62, nr 3-4
• Strony: 67--76
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Kubrak M.

• Warsaw University of Technology Faculty of Environmental Engineering, Poland

Bibliografia

• Kubrak J., Kubrak E. (2010) Basis of calculations of fluid mechanics in environmental engineering and protection, Wyd. SGGW, Warszawa (in Polish).
• Kubrak M. (2014) Theoretical and experimental analysis of steady water flow through an unsubmerged circular orifice, Master’s thesis, Warsaw University of Technology, Faculty of Environmental Engineering, Warszawa (in Polish).
• Mitosek M. (2014) Fluid mechanics in environmental engineering and protection, OficynaWydawnicza Politechniki Warszawskiej, Warszawa (in Polish).
• Piłat B., Wasilewski M. (1985) Tables of integrals, Wydawnictwa Naukowo-Techniczne, Warszawa (in Polish).
• Wrona W. (1967) Mathematics, part II, PWN, Warszawa (in Polish).