Discussion of “Numerical analysis of continuous unsteady flow in open channels”

1953 ◽  
Vol 34 (5) ◽  
pp. 792
Author(s):  
J. C. Schönfeld ◽  
Pin-Nam Lin
Keyword(s):  
Numerical Analysis ◽  
Unsteady Flow ◽  
Open Channels

Numerical analysis of unsteady flow under high‐head operating conditions in Francis turbine

2010 ◽  
Vol 27 (3) ◽  
pp. 365-386 ◽  
Author(s):  
Xiao Yexiang ◽  
Wang Zhengwei ◽  
Yan Zongguo ◽  
Li Mingan ◽  
Xiao Ming ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Unsteady Flow ◽  
Operating Conditions ◽  
Francis Turbine ◽  
High Head

310 Numerical Analysis of Unsteady Flow in a Silencer

2006 ◽  
Vol 2006.44 (0) ◽  
pp. 101-102
Author(s):  
Satoshi MURAKAMI ◽  
Tadatomo KOJIMA
Keyword(s):  
Numerical Analysis ◽  
Unsteady Flow

ONE-DIMENSIONAL HYDRODYNAMIC MODEL SIMULATING WATER STAGE IN OPEN CHANNELS (WS-1)

2010 ◽  
Vol 01 (02) ◽  
pp. 303-316
Author(s):  
M. A. NASSAR
Keyword(s):  
Unsteady Flow ◽  
Hydrodynamic Model ◽  
Water Levels ◽  
Open Channels ◽  
Nile River ◽  
Improvement Project ◽  
One Dimensional ◽  
Water Stage ◽  
The Impact ◽  
Good Agreement

One-dimensional (1D) numerical model was developed to simulate water stage in open channels in order to suggest solutions for practical problems in the Nile River and its branches. The continuity and momentum equations describe the unsteady flow were solved using the finite difference technique. The developed model is verified using two types of data. The first type, simulating steady flow, is a field data collected at Elbogdady reach. It is a reach located 712.80 km upstream of Roda's staff gauge on the Nile River. The second type, simulating unsteady flow, is a result of the 1D SOBEK model. It is simulating the flow field at El-Mahrousa canal. It is one of El-Kanobia canal branches at 11.47 km left side, which is fed from El-Mahmoudia canal. Simplifications were made to simulate the flow patterns around the hydraulic structures using the developed hydrodynamic model. Actually, the water levels in many branch canals under continuous flow after implementation of Irrigation Improvement Project (IIP) need to be checked. The model could be applied to estimate the water stage under different abstraction values where some reaches of the Nile River and its branch suffering. In addition, it can be used to assess the impact of water allocation. Good agreement was observed between the model results and the field observations.

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