Flow in which water particle velocities remain identical across all cross-sections is called ____________________?
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Answer: B. Uniform flow
Explanation
Uniform flow occurs when water particle velocities and depths remain identical across all cross-sections of a channel. In uniform open channel flow, the energy slope equals the bed slope along the entire reach. Fluid parameters do not change with distance along the direction of flow under strictly uniform conditions. Prismatic channels with constant cross-sectional geometry and roughness are necessary to achieve true uniform flow. Chezy and Manning equations are standard mathematical tools used to analyze uniform flow in open channels. Frictional resistance balancing the gravitational component allows the fluid velocity to remain perfectly constant.
Designers of irrigation canals strive for uniform flow conditions to ensure predictable water delivery rates. Long straight drainage ditches often approximate uniform flow over extended distances for engineering calculations. Maintaining uniform flow prevents excessive channel erosion and sediment deposition in engineered waterways. Steady flow means fluid properties do not change over time at any given point. Compressible flow involves significant density changes, which are typically negligible in open channel water flow. Laminar flow describes orderly fluid motion with smooth parallel layers and no turbulent mixing.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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