Froude number

Calculates hydraulic radius from flow area and wetted perimeter.

Calculates open-channel flow with Manning equation from area, hydraulic radius, and slope.

Calculates rectangular channel hydraulic radius from width and depth.

Calculates auxiliary cavitation number from pressure, vapor pressure, density, and flow velocity.

Calculates Euler number from pressure drop, density, and velocity.

Calculates Mach number as the ratio of flow velocity to speed of sound.