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Experimental Study of Bell-Mouth Intakes on Discharge Coefficient Original Article, C54 Naderi V, Farsadizadeh D, Hosseinzadeh Dalir A, Arvanaghi H. Journal. Civil Eng. Urban. 3(6):368-371. 2013 ABSTRACT:The strong vortices at the mouth of an intake reduce the discharge efficiency. One of the solutions for controlling the vortex is the use of bell-mouth intakes. Since only general guidance for use of bell-mouth intakes is available a study for the more shapes of mouth of intake is needed. Hence, a comprehensive set of experiments have been carried out using 4 different mouth-shapes of a vertical intake. The results showed that with reducing the radius of curvature of bell-mouth intake, the coefficient of discharge rate increased, and maximum discharge coefficient with four different mouth shape of intake with the radius of curvature of 2d was created. Keywords:Discharge coefficient, bell-mouth intake, vortex, radius of curvature of mouth of intake منبع: [Hidden Content] دانلود: [Hidden Content].,54-368-371.pdf J. Civil Eng. Urban.,54-368-371.pdf