Flow Near Sloped Bank in Curved Channel
Publication: Journal of Hydraulic Engineering
Volume 116, Issue 1
Abstract
Shear and velocity distributions near a sloped bank in a 270° open channel bend are studied. Data, which include detailed velocity and turbulence measurements in both the longitudinal and transverse flow directions, are collected with a laser Doppler anemometer system. The flow adjacent to a 2:1 (horizontal: vertical) and a 3:1 sloped bank is examined. The purpose is to examine in unprecedented detail the developing flow near a sloped bank in a curved channel, including the effect of varying side slope. It is found that the longitudinal flow redistribution is fully developed at the downstream end of this 270° bend, although the spiral flow is found to develop much more quickly. In the straight reach upstream of the bend it is found that the friction factor on the sloped bank is more dependent on channel shape than a local velocity‐shear‐stress relationship. Within the bend, velocities and shear stresses on the sloped bank increase significantly, with the shear stress correlating more directly with the local velocity.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bathurst, J. C., Thorne, C. R., and Hey, R. D. (1979). “Secondary flow and shear stress at river bends.” J. Hydr. Div., ASCE, 105(10), 1277–1295.
2.
Choudhary, U. K., and Narasimhan, S. (1977). “Flow in 180° open channel rigid boundary bends.” J. Hydr. Div., ASCE, 103(6), 651–657.
3.
Hicks, F. E. (1985). “Shear and velocity near a sloped bank in a curved channel.” Thesis presented to the University of Alberta, at Edmonton, Alberta, Canada, in partial fulfillment of the requirements for the degree of Master of Science.
4.
Ippen, A. T., et al. (1962). “Stream dynamics and boundary shear distributions for curved trapezoidal channels.” Co‐operative Research Report No. 47, Dept. of Civ. Engrg., Massachusetts Inst. of Tech., Cambridge, Mass.
5.
Ippen, A. T., and Drinker, P. A. (1962). “Boundary shear stresses in curved trapezoidal channels.” J. Hydr. Div., ASCE, 88(5), 143–179.
6.
Jin, Y. C, et al. (1988). “Flow and shear stress in curved channels—Phase IV— Velocity and shear stress near smooth and rough outside bank slopes.” Water Resour. Engrg. Rept., Dept. of Civ. Engrg., Univ. of Alberta, Edmonton, Alberta, Canada.
7.
Nash, J. F., and Patel, V. C. (1972). Three dimensional turbulent boundary layers. SBC Technical Books, Atlanta, Ga.
8.
Nezu, I., and Rodi, W. (1986). “Open channel flow measurements with a laser Doppler anemometer.” J. Hydr. Engrg., ASCE, 112(5), 335–355.
9.
Rajaratnam, N., and Muralidhar, D. (1970). “An experimental study of turbulent flow in smooth and rough trapezoidal channels.” Water Resour. Engrg. Rept., Dept. of Civ. Engrg., Univ. of Alberta, Edmonton, Alberta, Canada.
10.
Schlichting, H. (1979). Boundary layer theory. McGraw‐Hill Book Co., Inc., New York, N.Y.
11.
Steffler, P. M. (1984). “Turbulent flow in a curved rectangular channel.” Thesis presented to the University of Alberta, at Edmonton, Alberta, Canada, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
12.
Steffler, P. M., Rajaratnam, N., and Peterson, A. W. (1985). “LDA measurements in open channel.” J. Hydr. Engrg., ASCE, 111(1), 119–130.
13.
de Vriend, H. J., and Geldof, H. J. (1983). “Main flow velocity in short river bends.” J. Hydr. Engrg., ASCE, 109(7), 991–1011.
14.
White, F. M. (1986). Fluid mechanics. McGraw‐Hill Book Company, New York, N.Y.
15.
Yen, B. C. (1965). “Characteristics of subcritical flow in a meandering channel.” Inst. for Hydr. Res., Univ. of Iowa, Iowa City, Iowa.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 116 • Issue 1 • January 1990
Pages: 55 - 70
Copyright
Copyright © 1990 ASCE.
History
Published online: Jan 1, 1990
Published in print: Jan 1990
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.