Assessment of wind conditions in urban areas
Investigations of wind conditions are important to ensure comfortable wind environments in urban areas.
FORCE Technology has many years of experience in assessment of wind environments for different projects, including single buildings, urban areas or building details such as roof terraces, to mention a few. During the last year, we have performed numerous studies of wind environments for projects around the globe.
For the maritime industry, we supply similar investigations of wind environments for cruise ships where a comfortable wind environment is essential for open decks, balconies, pool areas and other outdoor recreational areas.
Aerodynamic specialists using state-of-the-art equipment
FORCE Technology’s department for Hydro- & Aerodynamics specialises in wind simulations and offers a wide range of studies. We utilize a series of simulation tools which are used to investigate wind conditions at several levels of detail. Through a desktop study, the exposed and sheltered areas are identified for the most predominant wind directions. These studies are based on experience from wind simulations in the wind tunnels and from theoretical application of fluid dynamic principles.
More detailed studies are based on wind tunnel simulations with scaled models. To determine wind speeds and turbulence intensities, we use advanced measurement techniques with precision anemometers and pressure probes.
Visualising the wind flow
Flow visualisations are used to understand the local flow phenomena which may lead to unpleasant wind conditions for areas which are intended for certain activities, for instance sedentary activities at street cafes, short-time stays on a bench in the public park, activities at a playground or walking at a car park. We make use of so-called erosion tests to create a continuous and detailed representation of exposed and sheltered zones at different levels for urban areas.
We combine wind speed measurements from wind tunnel tests with wind statistics from weather stations to determine the annual or seasonal wind environment for the exact area of interest.Taking the activities intended for the area into account, we evaluate the wind comfort based on objective wind comfort criteria and tell to which degree zones are well suited for the intended use. This is important knowledge for architects and engineers to account for wind comfort.
Case: ‘From Street to City’
Currently, we are involved in the ongoing urban development project ‘From Street to City’ (www.fragadetilby.dk) where a busy street in the centre of Odense, Denmark, is being transformed into a new neighbourhood with homes, shops, restaurants and cafes. Underground parking facilities are being established to make room for pedestrians, cyclists and light rail. Squares and urban spaces will provide room for recreational activities.
We perform studies for the architect and municipality to identify exposed areas, develop initiatives to improve wind conditions and thereby ensure the wind comfort at pedestrian level before the construction stage has even begun to avoid reconstruction of the area later on.