Velocity Amplification Factors (VAF) - [source code]
Compute Velocity Amplification Factors (VAF) and annual wind speed at probes from CFD results and EPW weather data. VAF (the term used in the wind-engineering literature for what Eddy3D historically called "wind factors") is the local wind speed normalized by the reference speed.
Input
| Name | Nickname | Description |
|---|---|---|
| Boundary Conditions | BC | OutdoorBoundaryConditions object from the ABL or Uniform Flow component. |
| Wind Velocity | U | DataTree of velocity vectors {direction}[probe] from the probe results. |
| EPW | Path to the EPW weather file. | |
| Height | Probing/pedestrian height in meters. | |
| Interp | Interpolate between bracketing wind directions. |
Output
| Name | Nickname | Description |
|---|---|---|
| Wind | Annual wind field object (every point's 8760-hour wind-speed series) for the Pedestrian Wind Comfort component. A single object rather than a data tree, so a few thousand probes stay fast. | |
| VAF | DataTree {direction}[probe] of Velocity Amplification Factors (VAF) — local wind speed normalized by the reference (undisturbed) speed. |