Discharge Equation for Rectangular Slots

Flow through gate openings has been the subject of study by many investigators. Gates are often located on raised crests, as in the case of spillways. In such a situation, the flow is expected to behave similarly to flow through rectangular slots. As flow through a rectangular slot is a particular case of flow through a large orifice, any understanding of it will help in its generalization. Furthermore, because the flow through a slot is intermediate to that of a sluice gate and a rectangular sharp-crested weir, it can be used as a basis of unification. In the present study a discharge equation for flow through rectangular slots has been obtained. In special cases this equation converts to the discharge equations of a sluice gate and a rectangular sharp-crested weir.