Discharge prediction in meandering compound channels

被引:0
作者
Pradhan A. [1 ]
Khatua K.K. [2 ]
机构
[1] Department of Civil Engineering, MVJ College of Engineering, Bangalore
[2] Department of Civil Engineering, National Institute of Technology Rourkela, Rourkela
来源
International Journal of Water | 2019年 / 13卷 / 03期
关键词
Discharge prediction; Error analysis; Meandering channels; Momentum transfer; Secondary current;
D O I
10.1504/IJW.2019.101335
中图分类号
学科分类号
摘要
Reliable prediction of discharge is the foremost requirement for the safety of river work and flood management. Parameters related to channel geometry and flow characteristics including effects of secondary current produced along the flow, momentum transfer across the main channel and floodplain are discussed briefly. In total seven datasets are used for the study. Discharge prediction for meandering channels by three existing methodologies, i.e., Greenhill and Sellin (1993), methods by James and Wark (1992) and by Shiono et al. (1999) is analysed. Relative error is calculated to check the degree of accuracy given by each method and is used as a tool to decide the effectiveness of the methods. The methods by James and Wark (1992) are observed to provide better results in comparison to the other models as they take into account the energy loss due to friction factor as well as sinuosity, geometry and expansion-contraction losses. © 2019 Inderscience Enterprises Ltd.
引用
收藏
页码:209 / 220
页数:11
相关论文
共 15 条
  • [1] Hydraulic Capacity of Meandering Channels in Straight Floodways, (1956)
  • [2] Ervine D.A., Ellis J., Experimental and computational aspects of overbank floodplain flow, Transactions of the Royal Society of Edinburgh: Earth Sciences, 78, 4, pp. 315-475, (1987)
  • [3] Ervine D.A., Willetts B.B., Sellin R.H.J., Lorena M., Factors affecting conveyance in meandering compound flows, Journal of Hydraulic Engineering, 119, 12, pp. 383-1399, (1993)
  • [4] Greenhill R.K., Sellin R.H.J., Development of a simple method to predict discharge in compound meandering channels, Proceedings of the ICE - Water, Maritime and Energy, 101, 1, pp. 37-44, (1993)
  • [5] Wallingford H.R., Phase a & B Flood Channel Facility Manual, Inception Report, (1991)
  • [6] James C.S., Wark J.B., Conveyance Estimation for Meandering Channels, (1992)
  • [7] Khatua K.K., Interaction of Flow and Estimation of Discharge in Two Stage Meandering Compound Channels, (2008)
  • [8] Kiely G., Experimental study of the mechanisms of flood flow in meandering channels, Proceedings of the 23rd IAHR Congress, (1989)
  • [9] Lotter G.K., Considerations on hydraulic design of channels with different roughness of walls, Transactions, All-Union Scientific Research Institute, 9, pp. 238-241, (1933)
  • [10] Mohanty P.K., Flow Analysis of Compound Channels with Wide Floodplains, (2013)