Stage-Discharge Prediction for Straight and Smooth Compound Channels with Wide Floodplains
Publication: Journal of Hydraulic Engineering
Volume 138, Issue 1
Abstract
A modified expression to predict the boundary shear distribution in compound channels is derived and is found to provide significant improved results. The practical method to predict the stage-discharge relationship uses the one-dimensional (1D) approach by taking due care of the momentum transfer. The proposed approach is tested for its validity using available experimental data. Error statistics including standard error and coefficient of determination ( ) are applied to ascertain the effectiveness of the model. The method also gives satisfactory results when applied to two sets of natural river data.
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Acknowledgments
The writers thank Professor D. W. Knight, University of Birmingham, U.K. for making available data sets of FCF on the website www.flowdata.bham.ac.uk. The writers also acknowledge the availability of Conveyance Estimation System package on the website: http://www.river-conveyance.net.
References
Ackers, P. (1992). “Hydraulic design of two-stage channels.” Proc. ICE-Water, Maritime, and Energy, 96(4), 247–257.
Bousmar, D., and Zech, Y. (1999). “Momentum transfer for practical flow computation in compound channels.” J. Hydraul. Eng., 125(7), 696–706.
Cassels, J. B. C., Lambert, M. F., and Myers, W. R. C. (2001). “Discharge prediction in straight mobile bed compound channels.” Proc. ICE Water, Maritime, and Energy, 148(3), 177–188.
Christodoulou, G. C. (1992). “Apparent shear stress in smooth compound channels.” Water Resour. Manage., 6(3), 235–247.
Hannan, J. M., and Kandasamy, J. (2009). “Experience of 1D and 2D flood modelling in Australia—A guide to model selection based on channel and floodplain characteristics.” Chapter 33, Flood risk management: Research and practice, CRC, London, 55–79.
Hin, L. S.,Bessaih, N., Ling, L. P., Ghani, A. B. A., Zakaria, N. A., and Seng, M. Y. (2008). “A study of hydraulic characteristics for flow in equatorial rivers.” Int. J. River Basin Manage., 6(3), 213–223.
Huthoff, F., Roos, P. C., Augustijn, D. C. M., and Hulscher, S. J. M. H. (2008). “Interacting divided channel method for compound channel flow.” J. Hydraul. Eng., 134(8), 1158–1165.
Kejun, Y., Shuyou, C., and Xingnian, L. (2007). “Flow resistance and its prediction methods in compound channels.” Acta Mechanica Sinica, 23(1), 23–31.
Khatua, K. K. (2008). “Interaction of flow and estimation of discharge in two stage meandering compound channels.” Ph.D. thesis, NIT, Rourkela, India.
Khatua, K. K., and Patra, K. C. (2007). “Boundary shear stress distribution in compound open channel flow.” J. Hydraul. Eng., ISH, 12(3), 39–55.
Knight, D. W., and Demetriou, J. D. (1983). “Floodplain and main channel flow interaction.” J. Hydraul. Eng., 109(8), 1073–1092.
Knight, D. W., and Hamed, M. E. (1984). “Boundary shear in symmetrical compound channels.” J. Hydraul. Eng., 110(10), 1412–1430.
Knight, D. W., McGahey, C., Lamb, R., and Samuels, P. G. (2009). Practical channel hydraulics: Roughness, conveyance and afflux, CRC, London.
Lambert, M. F., and Myers, W. R. (1998). “Estimating the discharge capacity in straight compound channels.” Proc. ICE Water, Maritime, and Energy, 130(2), 84–94.
McGahey, C., Samuels, P., and Knight, D. W. (2006). “A practical approach to estimating flow capacity of rivers application and analysis.” Proc. 3rd Int. Conf. on Fluvial Hydraulics, River Flow, 303–312.
Myers, W. R. C., and Elsawy, E. M. (1975). “Boundary shear in channel with floodplain.” J. Hydraul. Div., 100(7), 933–946.
Myers, W. R. C., and Lynness, J. F. (1990). “Flow resistance in rivers with floodplains.” Final Report on research grant GR/D/45437, University of Ulster, UK.
Patra, K. C., and Kar, S. K. (2000). “Flow interaction of meandering river with floodplains.” J. Hydraul. Eng., 126(8), 593–604.
Prinnos, P., and Townsend, R. D. (1984). “Comparison of methods of predicting discharge in compound open channels.” Adv. Water Resour., 7(4), 180–187.
Seçkin, G. (2004). “A comparison of one-dimensional methods for estimating discharge capacity of straight compound channels.” Can. J. Civ. Eng., 31(4), 619–631.
Sellin, R. H. J. (1964). “A laboratory investigation into the interaction between the flow in the channel of a river and that of its flood plain.” La Houille Blanche, 7(7), 793–801.
Shiono, K., and Knight, D. W. (1991). “Turbulent open channel flows with variable depth across the channel.” J. Fluid Mech., 222, 617–646.
Stephenson, D., and Kolovopoulos, P. (1990). “Effects of momentum transfer in compound channels.” J. Hydraul. Eng., 116(12), 1512–1522.
Van Prooijen, B. C., Battjes, J. A., and Uijttewaal, W. S. J. (2005). “Momentum exchange in straight uniform compound channel flow.” J. Hydraul. Eng., 131(3), 175–183.
Wormleaton, P. R., Allen, J., and Hadjipanos, P. (1982). “Discharge assessment in compound channel flow.” J. Hydraul. Div., 108(9), 975–994.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 138 • Issue 1 • January 2012
Pages: 93 - 99
Copyright
© 2012 American Society of Civil Engineers.
History
Received: May 11, 2010
Accepted: Jul 11, 2011
Published online: Jul 22, 2011
Published in print: Jan 1, 2012
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