fluid mechanics

Document Content and Description Below

Flow of a liquid in an open channel is defined as the flow of a liquid with a free surface. The free surface has a constant pressure such as atmospheric pressure. Thus a liquid flowing at atmospheri... c pressure through a passage is known as flow in open channels. When the level of a liquid in a pipe is below the top of the pipe, the flow is classified as open channel flow. In the case of open channel flow, as the pressure is only atmospheric, the flow takes place under the force of gravity. This means that flow takes place due to the slope of the bed of the channel. The hydraulic gradient line coincides with the free surface of water. Classification of flow in channels. Flow in open channels is classified into the following types: 1. Steady flow and unsteady flow 2. Uniform flow and non-uniform flow 3. Laminar flow and turbulent flow 4. Sub-critical and super critical flow. Steady flow and unsteady flow. If the flow characteristics such as depth of flow, velocity of flow, rate of flow at any point in the open channel flow do not change with respect to time, the flow is said to be steady flow. Mathematically [Show More]

Last updated: 1 year ago

Preview 1 out of 8 pages