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Total Discharge of Submerged Weir is the sum of the discharge from free and drowned portion. It represents the complete fluid flow measurement over a submerged weir structure.
The calculator uses the formula:
Where:
Explanation: The formula simply adds the discharge through the free portion (upstream to downstream) and the discharge through the drowned portion (downstream to crest) to obtain the total discharge over the submerged weir.
Details: Accurate calculation of total discharge over submerged weirs is crucial for hydraulic engineering, water resource management, irrigation system design, and flood control infrastructure planning.
Tips: Enter both discharge values in cubic meters per second (m³/s). Ensure values are non-negative and represent accurate measurements from the respective weir portions.
Q1: What is the difference between free and drowned portions?
A: Free portion refers to flow between upstream and downstream, while drowned portion refers to flow between downstream and the crest of the water.
Q2: What are typical units for discharge measurement?
A: Cubic meters per second (m³/s) is the standard SI unit, though other units like cubic feet per second (cfs) may also be used in some regions.
Q3: When is this calculation most commonly used?
A: This calculation is essential in hydraulic engineering for designing and analyzing weir structures in rivers, canals, and water treatment facilities.
Q4: Are there limitations to this simple addition formula?
A: While the formula is mathematically straightforward, accurate results depend on precise measurement of both discharge components under proper hydraulic conditions.
Q5: How can discharge through each portion be measured?
A: Discharge can be measured using various methods including flow meters, velocity-area methods, or calculated using specific weir equations based on head measurements.