Computer · Fluid Mechanics
An open channel is said to be the most economical section when it gives maximum discharge for a given cross-sectional area and bed slope. What is the relation between hydraulic radius (R) and depth of flow (d) for the most economical trapezoidal section?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Hydraulic radius = depth / 3
- 2Hydraulic radius = depth / 2✓
- 3Hydraulic radius = 1.5 × depth
- 4Hydraulic radius = 2 × depth
Correct answer
Hydraulic radius = depth / 2
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