A rectangular channel 5 m wide carries a discharge of 15+Y m3/s. The observed velocity at a particular point in the channel is 2.0 m/s. (Y= 3).  a. What is the specific energy of the flow at this point? b. What is the critical depth and critical velocity in the channel? c. hat will be the step up necessary that will produce critical depth? d. If you have to create critical depth by narrowing the width of the channel what will be width? e. If you decide to create critical depth using slope, calculate the slope with n=0.03.

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Open Channel Flow

Open channel flow is a branch of fluid mechanics. It deals with the flow of fluid in an open conduit or free surface. In an open channel flow, gravity induces the flow of water whose surface is open to the air. This flow is free-falling rather than confined in rigid body conduits. The open channel flow depends upon two parameters that are the cross-section of the conduit and the velocity profile. Practical examples of open channel flow are streams, rivers, canals, and other drainage systems.In open channel flow, the cross-sectional area of at least one of the sides is exposed to air, and the surface of water faces atmospheric pressure. This flow is also known as free gravity flow. The cross-sectional area of the conduit can be either man-made or a natural channel. For instance, the flow in rivers and streams are natural conduits, and the flow in a canal and sanitary systems are man-made or engineered channels.