Abstract
Formation of the vortex at the dams creates the air entrainment to the intakes and reduces the dewatering capacity of the system (in case of insufficient submergence of the intake). One of the common methods to preventing the air entrance and reducing the power of the vortex is the using of the meshed plates. Because of the researches on the using of vertical meshed plates on the vertical intakes are insufficient, in this research, the effect of the dimensions of the meshed plates on the critical submergence in an experimental model has been studied. The results showed that using the vertical meshed plates can increase the critical submergence for same discharge rates to 51 %.
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