scholarly journals Open Channel Flow with Variable Bed Shear Stress

1990 ◽  
Vol 34 ◽  
pp. 433-438 ◽  
Author(s):  
Tetsur OTSUJIMOTO ◽  
H. Antonio CARDOSO ◽  
Akira SAITO
Keyword(s):  
Shear Stress ◽  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Bed Shear Stress

scholarly journals Methods to Evaluate the Bed Shear Stress in Open Channel Flow

1988 ◽  
Vol 32 ◽  
pp. 503-521 ◽  
Author(s):  
Shinji EGASHIRA ◽  
Mikio KUROKI ◽  
Kenji SAWAI ◽  
Mssashige YAMASAKA
Keyword(s):  
Shear Stress ◽  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Bed Shear Stress

Groyne spacing role on the effective control of wall shear stress in open-channel flow

2018 ◽  
Vol 57 (2) ◽  
pp. 167-182 ◽  
Author(s):  
Theofano I. Koutrouveli ◽  
Athanassios A. Dimas ◽  
Nikolaos Th. Fourniotis ◽  
Alexander C. Demetracopoulos
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Effective Control ◽  
Wall Shear

scholarly journals Flow Partitioning in Rectangular Open Channel Flow

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Yu Han ◽  
Shu-Qing Yang ◽  
Muttucumaru Sivakumar ◽  
Liu-Chao Qiu ◽  
Jian Chen
Keyword(s):  
Shear Stress ◽  
Channel Flow ◽  
Open Channel ◽  
Laser Doppler Anemometry ◽  
Reynolds Shear Stress ◽  
Three Dimensional ◽  
Open Channel Flow ◽  
Flow Region ◽  
Mathematical Tool ◽  
Measured Velocity

Hydraulic engineers often divide a flow region into subregions to simplify calculations. However, the implementation of flow divisibility remains an open issue and has not yet been implemented as a fully developed mathematical tool for modeling complex channel flows independently of experimental verification. This paper addresses whether a three-dimensional flow is physically divisible, meaning that division lines with zero Reynolds shear stress exist. An intensive laboratory investigation was conducted to carefully measure the time-averaged velocity in a rectangular open channel flow using a laser Doppler anemometry system. Two innovative methods are employed to determine the locations of division lines based on the measured velocity profile. The results clearly reveal that lines with zero total shear stress are discernible, indicating that the flow is physically divisible. Moreover, the experimental data were employed to test previously proposed methods of calculating division lines, and the results show that Yang and Lim’s method is the most reasonable predictor.

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