High buildings that have a non-rectangular shape are easily analysed with modern calculation techniques - the microclimate immediately surrounding a building can also be examined.
For buildings with irregular shapes, the wind's effects are limited not just to the force in the wind direction. Depending on the shape and the direction of the approaching winds, forces arise across the wind direction and as torque.
Wind load norms and handbooks are of little help when calculating the forces. So far this has been done with expensive and time-consuming wind-tunnel tests, but thanks to CFD technology, more flexible and cost-effective calculations can be carried out.
The results are presented in the form of a detailed report with maps and illustrations.
Flow calculations are done with the help of CFD technology, a type of numeric wind tunnel. CFD, thanks to its flexibility, precision and wealth of detail, is often an attractive alternative to physical wind-tunnel tests.
Often, it is also a cheaper alternative. CFD has been used for a long time for the aerodynamic design of cars and planes, and also within a number of other industrial applications.