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<br />'I <br />I <br /> <br />11 <br /> <br />. <br /> <br />Table 2-1 <br /> <br />Types of Flow Profiles on Sustaining Slopes <br /> <br />. <br /> <br />Channel Slope <br /> <br />Designation <br /> <br />Type of Flow <br /> <br />Example <br /> <br />Mild <br />o < S < S <br />o c <br /> <br />Mi <br /> <br />Tranquil <br /> <br />Flow approaching a <br />reservoir. <br /> <br />M2 <br /> <br />Tranquil <br /> <br />Flow approaching a <br />drop. <br /> <br />M3 <br /> <br />Rapid <br /> <br />Flow On a mild- <br />sloping end of a <br />spillway apron <br />approaching a jump. <br /> <br />Critical <br />S = S <br />o c <br /> <br />Cl <br /> <br />Tranquil <br /> <br />Flow approaching a <br />reservoir. <br /> <br />C2 <br /> <br />Critical <br /> <br />Flow in a uniform <br />channel of critical <br />slope. <br /> <br />< <br /> <br />C3 <br /> <br />Rapid <br /> <br />Flow On a critical <br />slope spillway apron <br />downstream of a chute. <br /> <br />. <br /> <br />Steep' <br />S > S <br />o c <br /> <br />81 <br /> <br />Tranquil <br /> <br />Flow approaching a <br />reservoir. <br /> <br />S2 <br /> <br />Rapid <br /> <br />Flow over a spillway <br />chute. <br /> <br />S3 <br /> <br />Rapid <br /> <br />Flow downstream of a <br />sluice gate in a <br />steep channel. <br /> <br />Flow profiles may possibly contain discontinuities. This would <br /> <br />occur when depth of flow is suddenly changed from rapid to tranquil in a <br /> <br />. <br /> <br />hydraulic jump. Conversely, the flow could change from tranquil to <br /> <br />rapid at a hydraulic drop. For either of these instances, the flow <br /> <br />. <br /> <br />profile will cross the critical depth line. At or near the critical <br /> <br />depth line flow accelerates so that the flow profile is bent to such <br />