Vertical Wind Profile - Power Law
Description
The design of buildings must account for wind loads, and these are affected by wind shear. For engineering purposes, a power law wind speed profile may be defined by a formula that calculates the wind speed v2 at a certain height h2 in relation to an original height h1 and speed v1, assuming a power law vertical profile of wind speed function of the shear exponent α in turn depending on the site.
For neutral stability conditions, {\displaystyle \alpha } \alpha is approximately 1/7, or 0.143.
Related formulasVariables
| v | wind speed at height z (m/s) |
| vr | known wind speed at reference height z_r (m/s) |
| z | height (m) |
| zr | reference height (m) |
| α | shear exponent (depends on the site) (dimensionless) |