Calculate the Froude number (froudeNum) (dimensionless).

calcFroudeNum(shipSpeed, lwl)

Arguments

shipSpeed

Ship actual speed (vector of numericals, m/s) (see calcSpeedUnitConversion)

lwl

Waterline length (vector of numericals, m) (see calclwl)

Value

froudeNum (vector of numericals, dimensionless)

Details

The Froude number is a dimensionless coefficient that relates a vessel's speed and length to a relative resistance. The equation for the Froude number is: $$Fn=\frac{V}{\sqrt{g*Lwl}}$$ Where V is the ship's speed, g is the gravitational constant (9.81 m/s^2), and lwl is the waterline length (m) of the vessel.

References

MAN Energy Solutions. 2011. "Basic Principles of Propulsion."

See also

Examples

calcFroudeNum(seq(1,5,1),214)
#> [1] 0.02182522 0.04365044 0.06547566 0.08730088 0.10912609