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The high head bottom outlet slide gates, which are used to regulate the flow rate, operate under severe conditions, and may be exposed to vibrations of different sources. Such that, improper working conditions and / or uncontrolled vibrations may cause a failure of the gate resulting in human and financial damages.
One degree of freedom models may be used to study the flow induced vibration of the small gates. However, for the gates with large dimensions, one degree of freedom models usually don’t work and, therefore, the hydro elastic model tests and the modal analysis are recommended for them. In the present investigation, the bottom outlet slide gate of one of the dams presently under construction in Iran, has been hydro elastic modeled and modal
analysis is performed for it.