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Manning Open Channel Akisi Analysis - Arazi Toplama Kanali Flow Rate Calculator
Country-neutral calculator for Manning Open Channel Akisi Analysis - Arazi Toplama Kanali Flow Rate.
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Manning Open Channel Akisi Analysis - Arazi Toplama Kanali Flow Rate Calculator: method and worked example
What the calculation does
Uniform-flow Manning discharge Q = A R^(2/3) sqrt(S)/n (m³/s) in SI units. A = width × depth, R = A/(width + 2 depth).
Example using the prefilled values
Worked example: width=1.2 m, depth=0.45 m, n=0.015, slope=0.002 m/m; result = 0.65102921097 m³/s.
How to interpret the result
Uniform-flow Manning discharge Q = A R^(2/3) sqrt(S)/n (m³/s) in SI units. A = width × depth, R = A/(width + 2 depth).
Assumptions and limitations
Use for approximately steady, uniform, free-surface rectangular channel flow. Manning n must be positive and appropriate to material/condition; water depth and width positive, energy slope nonnegative. This estimates one cross-sectional state, not backwater, critical-depth, sediment, capacity at design freeboard, or flood routing.
Input
Inputs used by this calculator
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Channel widthmWater depthmManning roughness nEnergy slopem/m