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Determination of discharge coefficient of triangular labyrinth side weirs with one and two cycles using the nonlinear PLS method

Nekooie, M. A ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. Publisher: CRC Press/Balkema , 2016
  3. Abstract:
  4. Side weirs are hydraulic control structures widely used in irrigation, drainage networks and waste water treatment plants. These structures can be used for adjusting and diverting of flow with minimum energy loss. In spite of many studies were carried out on rectangular side weirs, the studies on oblique and labyrinth side weirs are scarce. In this study, based on the experimental data from more than 210 laboratory tests and through using the multivariable nonlinear partial least square (PLS) method, two nonlinear equations are presented for discharge coefficient CM of triangular labyrinth side weirs with one and two cycles. The obtained empirical equations relating CM with the relevant geometric and hydraulic dimensionless parameters L′/B, L′/L, Fr1/sin(δ/2) and p · sin (δ/2)/(h1-p) in a rectangular open channel. Comparison between results of the new presented equations and the measured data shows that the proposed empirical equations can predict the discharge of diverted flow over side weirs with good accuracy
  5. Keywords:
  6. Energy dissipation ; Engineering research ; Hydraulic machinery ; Hydraulic structures ; Least squares approximations ; Open channel flow ; Waste treatment ; Wastewater treatment ; Water treatment ; Weirs ; Dimensionless parameters ; Discharge coefficients ; Drainage networks ; Empirical equations ; Hydraulic control ; Laboratory test ; Multi variables ; Partial least square (PLS) ; Nonlinear equations
  7. Source: Sustainable Hydraulics in the Era of Global Change - Proceedings of the 4th European Congress of the International Association of Hydroenvironment engineering and Research, IAHR 2016, 27 July 2016 through 29 July 2016 ; 2016 , Pages 653-657 ; 9781138029774 (ISBN)
  8. URL: http://www.crcnetbase.com/doi/abs/10.1201/b21902-110