Computational Fluid Dynamics (CFD) is a computer simulation method based on mathematical
modelling of fluid flow using discrete elements. The 3-Dimensional space around a building or
other structure is divided into a large number of tiny elements (of which there may be millions).
Each element possesses the physical attributes which describes the flow field. When the
equations for each element are combined and solved, a continuous picture emerges of the desired
flow quantity, including pressure, velocity, temperature, or any other specified quantity of
interest. By taking advantage of state-of-the-art computer advancements in high speed and
parallel processing, the technique represents a powerful companion tool to the physical wind
tunnel. In essence, CFD creates a “virtual wind tunnel” which is capable of solving complex
problems. Ever improving technology and increasing software sophistication, is rapidly taking
the CFD tool out of the laboratory and into the real world to solve complex and practical
problems in wind engineering.
GmE has invested in the development of in-house know-how for applying this technology and made it
available in our main stream of engineering services. It has become a versatile and powerful
addition especially when combined with our physical wind tunnel testing capability.
The CFD approach has been applied to solve problems relating to pedestrian level wind comfort,
cladding pressures on buildings, as well as pollution dispersion.
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