Further Experimental
Research Work
on Water Current Turbines
Case Study on Atbara Water Current Turbine
Keywords: Aerofoidal sections, flowing rivers water
turbines, efficiencies, coefficient of lift and drag.
Osama Mohammed Elmardi Suleiman
Assistant Professor of Mechanical Engineering, Nile
Valley University, Atbara, Sudan
Written in August 1998, and revised in October 2010
ii
Dedication
In the name of Allah, th
Contents
Description Page
Acknowledgement i
Abstract ii
Contents iii
List of figures v
List of tables vi
Preface vii
Chapter One Introduction
1.1 Historical background
1.2 Water – current energy
1.3 Atbara Water – current turbine
Chapter Two Aerofoil theorem
2.1 Aerofoil definitions
2.2 Aerofoil terminologies
2.3 Geometrical parameters
2.4 Aerofoil types
2.5 Generation of lift and drag
Chapter Three Model design and testing procedures
3.1 Model design
3.2 Testing procedures
Chapter Four Discussion of results
4.1 Readings
4.2 Sample of calculations
4.3 Results
4.4 Comments on graphs and results
iv
analysis
Chapter Five Conclusions and recommendations
5.1 Conclusions
. Recommendations
References
v
List of Figures
Serial De
Serial Description Page
. Asymmetric aerofoil
. Symmetric aerofoil
. Two types of aerofoidal section profiles
. Variation of CL and CD with for a typical
aerofoil
. The straight – cambered aerofoil drawn in full
– size dimensions
. The cambered – cambered aerofoil drawn in
full – size dimensions
. The holding mechanism of the water – current
turbine model
. The full – size water current turbine (Atbara
water current turbine)
. Efficiency against angle of incidence of
straight – cambered aerofoil
. Coefficient of lift against angle of incidence of
straight – cambered aerofoil
. Efficiency against angle of incidence of
cambered – cambered aerofoil
. Coefficient
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