Question
Download Solution PDFThe specific energy of flow is the energy per unit weight of water with respect to the channel bottom as datum. As level of the channel bottom goes down, ____________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
- The specific energy of flow is defined as the energy per unit weight of water with respect to the channel bottom as the datum.
- It is expressed as the sum of the water surface elevation, the velocity head, and the elevation of the channel bottom.
- When the level of the channel bottom goes down, the potential energy term (elevation of the channel bottom) decreases.
- As a result, the specific energy increases because a smaller portion of the total energy is associated with potential energy, and more energy is distributed between kinetic and elevation of water surface components.
Additional InformationThe energy at a section is the sum of the kinetic head, potential head and datum head.
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