What's the most aerodynamic building in the world? Why was it built this way?
BURJ KHALIFA is the most aerodynamic building built uptill now.
It was built this way to withstand the wind loads and avoid the overturning moment, hence it was given rounded edges which reduce drag and turbulence.
The discontinuities in the building create a vortex which minimizes the wind load, breaking the wind load and reducing drag
Drag is the force of wind or
air resistance pushing in the opposite direction to the motion of the object, drag is reduced by more than 40%
It was observed that the drag coefficient could be reduced by up to 40 % by rounding the corners. This will consequently decrease the straining actions developed by the structure, which will give more economic and less bulky cross sections.