Calculate critical depth for open channels and pipes. Determine the depth at which specific energy is minimum and Froude number equals 1. Supports circular, rectangular, trapezoidal, and triangular sections.
Critical depth is the depth at which specific energy is minimum for a given discharge. At critical depth, the Froude number equals 1 and flow transitions between subcritical and supercritical regimes.
Key relationships:
For rectangular channels: yc = (Q2 / (g * b2))1/3
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