wflo (version 1.9)

WindspeedLog: Scales wind speeds to certain heights.

Description

For a wind speed at given height, returns a scaled wind speed at some different height. Often used to obtain wind speed at hub height.

Usage

WindspeedLog(v0, HH = 100, z0 = 0.1, refHeight = 10)

Value

WindspeedLog returns a wind speed (in meters per second) at the desired height.

Arguments

v0

wind speed (in meters per second) at reference height.

HH

the height (in meters) at which wind speed is desired.

z0

roughness length (in meters). Usually set to 0.1 m for onshore sites.

refHeight

reference height (in meters). The height at which the actual wind speed (v0) was measured.

Author

Carsten Croonenbroeck

Details

This function simply implements $$v = v_0 (\frac{\log{\frac{HH}{z_0}}}{\log{\frac{refHeight}{z_0}}})$$
Note that this way to scale wind speeds to certain heights is frequently considered deprecated in the literature. Use WindspeedHellmann instead.

See Also

WindspeedHellmann for a different way to scale wind speeds to heights.

Examples

WindspeedLog(v0 = 6, HH = 80, z0 = 0.1, refHeight = 20)
WindspeedHellmann(v0 = 6, HH = 80, refHeight = 20)