The Effect of the door opening on various channel type of flow velocity (Case Study: Secondary channel of the Saddang Irrigation Area, Pinrang Regency)

Abstract

Abstract Water that flows in channels in free conditions is water that flows in open channels and comes into contact with free air. All flows that enter the open channel system are designed to flow by gravity. The Open channels can be divided into two types, namely artificial and natural channels. Open channels encountered in technical, semi-technical, and non-prismatic irrigation. Research is carried out in line Secondary Regional Irrigation Alitta village Bentenge Subdistrict Paleteang district Pinrang the channel reviewed is a secondary channel which has a different type of channel, namely pair stone channel, concrete lining channel, precast concrete channel, and soil channel which is influenced by 3 door openings, namely 20 cm opening, 30 cm opening and 40 cm opening.

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