Discharge over a right-angled (90°) V-notch Given head H measured above the notch apex. Identify the exponent of H and the standard form of the discharge relation (up to proportionality).
Mechanical Engineering
Hydraulics and Fluid Mechanics
Difficulty: Easy
Choose an option
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ACd √(2g) × H
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BCd √(2g) × H3/2
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CCd √(2g) × H2
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DCd √(2g) × H5/2
Answer
Correct Answer: Cd √(2g) × H5/2
Explanation
Concept/ApproachFor a triangular (V) notch, the theoretical discharge is proportional to H5/2. For a right-angled notch (θ = 90°): Q = (8/15) Cd √(2g) H5/2.
Final AnswerCd √(2g) × H5/2