الفهرس 
LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
The present study aims to investigate the relations
between the discharge, the gate characteristics, and the
water depths (upstream and downstream) to suggest an
algorithm for control purposes of radial gates. This
algorithm gives mainly the relations between the gate
opening, the upstream water depth and the water depth just
downstream the gate to keep the discharge constant.
In the theoretical study, dimensional analysis is
adopted to investigate the different parameters affecting
the discharge, as well as the parameters affecting the gate
opening. Also some equations which are needed for the
algorithm were deduced in this theoretical study.
Experimental study was carried out in a rectangular
reinforced concrete flume in the laboratory of Irrigation
and Hydraulics Department, Faculty of Engineering, Ain
Shams University. A model of radial gate with two vents was
used to carry out the experimental work.
Results of the experimental data analysis are
presented as a series of graphs showing essentially the
relations between the water depths at upstream section,
downstream section, and just downstream the gate for .)
constant discharge. These figures are explained
analytically using the developed theoretical equations.
Also the relations between the pressure head over the gate,
the gate opening, and the discharge are presented.
An algorithm is developed giving the equations between
the gate opening and its affecting variables. This
algorithm can be applied for the automatic regulation of
radial gates. The verification of this algorithm is done to
measure the accuracy of the developed algorithm.
Design charts are plotted in order to give the gate
opening according to the upstream water depth, the water
depth just downstream the gate, and the discharge.
Finally, some of the raw data are tabulated in