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To make sure from the correct functioning of the high head gates and, also, to determine hydrodynamic froces, such gates are hydraulic model tested during the design period. All the high head gates for the Iranian dams have been tested outside the country with high costs. Besides, the aerodynamic tests have also been introduced as a substitute for the hydraulic tests, in the recent years. With the two objectives of gaining technical
know-how for the hydraulic model test of
the gates, and to verify the accuracy of
the aerodynamic model tests, the side
gate of the Marun dam’s bottom outlet
was hydraulic model tested. By
measuring the pressures in the proper
locations of the model gate and its
casting, and using the quality of the
Wuler numbers, pressures in the similar
points of the prototype gate was
calculated. These pressures were used to
calculate the hydrodynamic force applied
on the gate. The hydrodynamic forces of
different elements of the gate and the
resultant force, at different gate openings,
compare very well with the results
obtained from the aerodynamic model
test.