Preprint Article Version 1 NOT YET PEER-REVIEWED

Experimental Study on the Hydrodynamic Influence of River Flow Confluences to the Open Channel Stage-Discharge Relationship

  1. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
  2. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China
Version 1 : Received: 19 October 2016 / Approved: 19 October 2016 / Online: 19 October 2016 (12:31:32 CEST)

How to cite: Wang, X.; Wang, H.; Yan, X.; Liu, X.; Duan, H. Experimental Study on the Hydrodynamic Influence of River Flow Confluences to the Open Channel Stage-Discharge Relationship. Preprints 2016, 2016100079 (doi: 10.20944/preprints201610.0079.v1). Wang, X.; Wang, H.; Yan, X.; Liu, X.; Duan, H. Experimental Study on the Hydrodynamic Influence of River Flow Confluences to the Open Channel Stage-Discharge Relationship. Preprints 2016, 2016100079 (doi: 10.20944/preprints201610.0079.v1).

Abstract

An accurate assessment of the stage-discharge relationship in open channel flows is necessary and important to the design and management of hydraulic structures and engineering in practical hydrosystems such as rivers and streams. While the flow structures and patterns at open channel junctions are interesting and have been widely studied in the literature, this paper focuses further on the effect of flow junctions on stage-discharge relationship at mountain river confluences. In this study, both the flume and physical model experiments are designed and performed carefully to test and analyze the complex flow structures and characteristics at river confluences with different configurations and hydraulic conditions. The impacts of the flow junctions on the traditional stage-discharge relationship are analyzed in this study. The results of this study are discussed in the paper for the understanding of flow structures at flow junctions and the design and management of hydraulic structures in river engineering.

Subject Areas

river confluence; stage-discharge relationship; hydrodynamic influence; backwater; flow separation

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