IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 9 - SPECIAL SEMINARS : Quantification of Flow Resistance in Mountain Rivers Based on Resistance Partitioning
Quantification of Flow Resistance in Mountain Rivers Based on Resistance Partitioning
Author : Dangwei Wang, Jianguo Chen and Xudong Fu
Based on resistance partitioning method and uncertainty principle, flow resistance in mountain rivers can be divided into three parts: (1) base resistance n for a straight, smooth, S uniform channel; (2) resistance caused by protuberance in riverbed n ; (3) physiognomy and river B geometry resistance n , in which, base resistance equals to that of the glass flume. Based on analysis of G data and theoretical analyses, a relation between blockages factor B and resistance caused by protrusions on riverbed was derived. Riverbed slope S is adopted as a key factor to calculate physiognomy and river geometry resistance, and then the method for calculating the total resistance was obtained. Finally this method was used in Longxi River, and the method was proved to be reasonable, but some uncertainty still exists and the key problem was discussed.
File Size : 257,222 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 20/07/2016
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