When submitting a new scenario, you will be required to choose the Wind Directions for your analysis as well as the Terrain types found in the areas adjacent to your project site.
Choosing Wind Directions
In general, choose a minimum of 6 wind directions up, however 8 are preferred. Choosing 8 directions help ensure that you have some statistical confidence in the combined Pedestrian Wind Comfort results.
Choosing Terrain Type
Selecting terrain types for each direction provides a more fine-tuned analysis representative of the site area. Choosing the appropriate terrain is important because of how wind interacts with the environment. For each selected wind direction, determine the terrain type between 300 and 2000 meters away from the site. For this, we recommend referring to satellite imagery (e.g. via Google Maps).
Below is a description of each of the terrain options to choose from:
Open: Unobstructed and flat areas, ideal for large bodies of water, fields, or parking.
(Z0 = 0.03)
Rural: Slightly obstructed areas, ideal for farmland or scattered low-rise buildings.
(Z0 = 0.1)
Forest / Light Suburban: Partially obstructed areas, ideal for wooded areas, parks, and low-density towns.
(Z0 = 0.3)
Suburban: Obstructed area with tightly packed residential (single/two story) and occasional multi-story buildings. Ideal for medium density cities with some large buildings.
(Z0 = 0.5)
Urban: Highly obstructed area, ideal for high density cities two to five story buildings with the occasional high rise.
(Z0 = 1.0)
Skyscrapers: Significantly obstructed area, ideal for very high-density metropolises with towers. (e.g. Manhattan, New York; Hong Kong)
(Z0 = 3.0)