Toggle Main Menu Toggle Search

Open Access padlockePrints

Effect of Floodplain Roughness on Velocity Distribution in Mountain Rivers

Lookup NU author(s): Professor Qiuhua Liang


Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


This paper aims to investigate the velocity characteristics of compound rivers in mountain areas, featured with substantially different roughness between the main channel and floodplain. A series of flume experiments have been conducted to investigate the velocity distribution affected by different roughness in the main channel and its floodplain. The experimental data are analysed to obtain a new empirical formula to determine the velocity ratio between the main channel and the floodplain. In addition to the roughness, the ratio between the water depth in the main channel and the floodplain also affects the flow velocity. Therefore the velocity characteristics vary with the roughness and depth in the subsections of the compound channel. The new empirical formula is applied to estimate velocity in the upper reach of Yangtze River, in Chongqing, China. The calculated results are found to be consistent with the field measurements, demonstrating the potential of the formula for estimating velocity distribution in mountain rivers.

Publication metadata

Author(s): Xing Y, Yang SF, Zhou HJ, Liang QH

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 12th International Conference on Hydroinformatics (HIC 2016) - Smart Water for the Future

Year of Conference: 2016

Pages: 467-475

Online publication date: 24/08/2016

Acceptance date: 01/01/1900

ISSN: 1877-7058

Publisher: Elsevier BV


DOI: 10.1016/j.proeng.2016.07.539

Series Title: Procedia Engineering