Experimental Study of Hydrodynamic Pressures Acting on a Submerged Gate

Vortical flow formed by a submerged hydraulic jump may produce significant hydrodynamic lift and drag pressures on gate beneath the jump. In this study, an experimental setup equipped with multi-pressure sensors was used to measure fluctuating impact for different conditions characterized inlet Froude number submergence factor (S). Time-averaged instantaneous pressure coefficients are evaluated based simultaneous measurements of wall at multiple locations, including those lip downstream face gate. particular, observed be independent ratio S > 0.6. It is found that low flows high surface fluctuations dominant frequency shifts higher as increases. Pressure free suggest power spectra devoid any energy level, whereas resulting exhibits level in range 14-19 Hz. The proposed measurement system can situ identification acting gates irrigation canals.