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Francis Discharge with Suppressed End Formula:
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Francis Discharge with Suppressed End is the discharge of flow without the end contraction. It represents the flow rate over a weir when the end contractions are suppressed and velocity is not considered in the calculation.
The calculator uses the Francis Discharge formula:
Where:
Explanation: The formula calculates the discharge over a weir when end contractions are suppressed, providing an accurate measurement of flow rate based on weir geometry and water height.
Details: Accurate discharge calculation is crucial for hydraulic engineering, water resource management, and irrigation system design. It helps in determining flow rates in open channels and weirs.
Tips: Enter the length of weir crest in meters and height of water above crest of weir in meters. All values must be valid positive numbers.
Q1: What does "suppressed end" mean in this context?
A: Suppressed end means that the weir has no end contractions, allowing the water to flow over the full length of the weir without lateral constriction.
Q2: When should this formula be used?
A: This formula is used for calculating discharge over rectangular weirs with suppressed ends when velocity of approach is not considered.
Q3: What are the limitations of this formula?
A: This formula assumes ideal conditions and may not account for factors like weir shape irregularities, viscosity effects, or surface tension.
Q4: How accurate is the Francis formula?
A: The Francis formula provides good accuracy for most practical engineering applications involving suppressed-end weirs under normal flow conditions.
Q5: Can this formula be used for other weir types?
A: No, this specific formula is designed for rectangular weirs with suppressed ends. Other weir types require different discharge formulas.