Discharge Coefficient of a Triangular Side-Weir Located on a Curved Channel
Publication: Journal of Irrigation and Drainage Engineering
Volume 130, Issue 5
Abstract
This study aims to obtain sharp crested triangular side-weirs discharge coefficients both in the straight channel and along the bend by using a total of 1,735 experiments. It was found that triangular side-weirs discharging coefficients along the bend depend on the upstream Froude number in the main channel , the apex angle of side-weir , and the bend angle . Because there is much greater intensity of secondary flow created by lateral flow with an increase of the overflow length, sharp crested triangular side-weirs discharge coefficients of the apex angle were achieved more frequently than the others even at the straight channel in subcritical flow conditions. In a curved channel, the path of maximum velocity and the secondary current created by the bend both cause a much greater deviation angle towards the side-weir which is involved within and . Therefore, triangular side-weirs discharging coefficients along the bend are greater than the values obtained in the straight channel.
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References
1.
Agaccioglu, H. ( 1995). “Yan Savaklardaki akımın kıvrımlı bir kanal boyunca incelenmesi. (The investigation of side-weir flow along a curved channel).” PhD thesis, Yildiz Technical Univ., Istanbul, Turkey (in Turkish).
2.
Agaccioglu, H. ( 1998). “The effect of transverse water slope on the side-weir discharge coefficient for curved channel.” J. Digest 98, Turkish Chamber of Civil Engineering, 9, 527–529.
3.
Agaccioglu, H. and Yüksel (1998). “Side-weir flow in curved channels.” J. Irrig. Drain. Eng., 124(3), 163–175.
4.
Borghei, S. M., Jalili, M. R., and Ghodsian, M. (1999). “Discharge coefficient for sharp-crested side weir in subcritical flow.” J. Hydraul. Eng., 125(10), 1051–1056.
5.
Chang, H. H. (1983). “Energy expenditure in curved open channels.” J. Hydraul. Eng., 109(7), 1012–1022.
6.
Chang, H. H. (1984). “Variation of flow resistance through curved channels.” J. Hydraul. Eng., 110(12), 1772–1782.
7.
Cheong, H. F. (1991). “Discharge coefficient of lateral diversion from trapezoidal channel.” J. Irrig. Drain. Eng., 117(4), 461–475.
8.
Choudhary, U. K., and Narasimhan, S. (1977). “Flow in 180° open channel rigid boundary bends.” J. Hydraul. Div., Am. Soc. Civ. Eng., 103(6), 651–657.
9.
Chow, V.T. ( 1959). Open channel hydraulic, Chap. 16, McGraw–Hill, New York, 439–460.
10.
Cosar, A. ( 1999). “Üçgen kesitli yan savakların kıvrımlı bir kanal boyunca incelenmesi. (The investigation of triangular side-weirs along a curved channel).” PhD thesis, Yildiz Technical Univ., Istanbul, Turkey (in Turkish).
11.
De Marchi, G. (1934). “Saggio di teoria de funzionamente degli stramazzi laterali.” Energ. Elettr., 11, 849–860.
12.
El-Khashab, A.M. M. ( 1975). “Hydraulics of flow over side-weirs.” PhD thesis, Presented to the Univ. of Southampton, Southampton, U.K.
13.
Fares, Y. R., and Herbertson, J. G. (1993). “Compertement de I’ecoulement dans un canal courbe avec un deversior lateral alimentant un canal evacuateurde crue.” J. Hydraul. Res., 31(3), 383–401.
14.
Francis, J. R. D. and Asfari, A. F. (1971). “Compertement de I’ecoulement dans un canal courbe avec un deversior lateral alimentant un canal avacuteur de crue.” J. Hydraul. Res., 31(3), 383–401.
15.
Kumar, C. P., and Pathak, S. K. (1987). “Triangular side weirs.” J. Irrig. Drain. Eng., 113(1), 98–105.
16.
Munson, B.R., Young, D.F., and Okiishi, T.H. ( 1999). Fundamentals of fluid mechanics, Chap. 10, Wiley, New York, 677–680.
17.
Muramoto, Y. ( 1967). “Secondary flows in curved open channels.” Proc., IAHR, vol. 3, 315.
18.
Nandesamoorthy, T., and Thomson, A. (1972). “Discussion of spatially varied flow over side-weirs.” J. Hydraul. Div., Am. Soc. Civ. Eng., 98(12), 2234–2235.
19.
Ranga Raju, K. G., Prasad, B., and Grupta, S. K. (1979). “Side weir in rectangular channel.” J. Hydraul. Div., Am. Soc. Civ. Eng., 105(5), 547–554.
20.
Rozovskii, I.L. ( 1957). Flow of water in bends of open channels, Academy of Sciences of Ukrainian S. S. R., Kiev, Soviet Union.
21.
Shukry, A. (1950). “Flow around bends in open flume.” J. Hydraul. Div., Am. Soc. Civ. Eng., 115, 751–759.
22.
Sing, R., Manivannan, D., and Satyanarayana, T. (1994).“Discharge coefficient of rectangular side weirs.” J. Irrig. Drain. Eng., 120(4), 814–819.
23.
Soliman, M. M., and Tinney, E. R. (1968). “Flow around 180° bends in open rectangular channels.” J. Hydraul. Div., Am. Soc. Civ. Eng., 94(4), 893–908.
24.
Spiegel, M.R. ( 1972). Theory and problems of statistics, Schaum’s outline series, McGraw–Hill, New York.
25.
Subramanya, K., and Awasthy, S. C. (1972).“Spatially varied flow over side-weirs.” J. Hydraul. Div., Am. Soc. Civ. Eng., 98(1), 1–10.
26.
Yen, K. C., and Kennedy, J. F. (1993). “Moment model of nonuniform channel bend flow. I: Fixed beds.” J. Hydraul. Eng., 119(7), 776–795.
27.
Yu-Tech, L. (1972). “Discussion of spatially varied flow over side-weirs.” J. Hydraul. Div., Am. Soc. Civ. Eng., 98(11), 2046–2048.
Information & Authors
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Published In
Journal of Irrigation and Drainage Engineering
Volume 130 • Issue 5 • October 2004
Pages: 410 - 423
Copyright
Copyright © 2004 ASCE.
History
Published online: Oct 1, 2004
Published in print: Oct 2004
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