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.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Experimental Study on Flow Partitioning Based on Turbulence Shear Stress
Experimental Study on Flow Partitioning Based on Turbulence Shear Stress
Author : Yu Han
Most river engineers believe that a river flow can be divided into three parts by division lines. The hypothesis is receiving much attention, and many believe it is only a mathematical treatment to simplify the complex flows and has no physical basis. Those who believe the existence of division lines also argue whether the division line should be linear or curves. Even the argument is intensive, no specially designed experiments were conducted to verify which statement is true, and which model is reliable to predict the real division lines, not to mention whether the existence of division lines can be inferred from its turbulence shear stress. The aim of this paper is to show the existence of division lines by analyzing the turbulence shear stress in duct and channel flow. The division line theories of [1] [2] [3] [4] Keulegan , Daido , Yang and Lim and Guo and Julien were selected for comparison in this study which yielded varying results with the experimentally observed division line. The physical existence of division lines is illustrated in this study of flows through smooth ducts and channels, and the concept that the flow region can be partitioned is validated.
File Size : 238,712 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT
Date Published : 18/07/2016
Download Now