_______________ number dictates whether fluid flow in an open channel is super-critical, critical, or sub-critical ?
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Answer: C. Froude
Explanation
The Froude number represents the ratio of inertial forces to gravitational forces. Open channel fluid flow regimes depend heavily on this specific dimensionless number. Calculated values determine whether water flow is super-critical, critical, or sub-critical. Dimensionless numbers allow engineers to scale fluid dynamics models accurately. Open channel flow involves liquid surfaces exposed directly to atmospheric pressure. Gravitational acceleration and flow velocity govern surface wave propagation phenomena.
Civil engineers design spillways and open irrigation canals using Froude number criteria. Preventing destructive hydraulic jumps requires careful analysis of channel flow regimes. Hydraulic structure safety depends on accurate open channel flow classification. Mach number characterizes fluid flow speeds relative to the speed of sound. Reynolds number defines the ratio of inertial forces to viscous forces in pipes. Weber number evaluates fluid surface tension effects in multiphase flow systems.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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