The shrouded feature of the ODGV is to enhance the
performance by increasing the on-coming wind speed
before it interacts with the rotor blades. The ODGV is
designed with 4 pairs of guide vanes placed uniformly
around a cylinder with tapered feature at outer radial band.
The vanes in each pair are tilted at angles of 20° and 55°
as shown in Fig. 2. This design allows it to capture wind
blowing from any direction without the need of a yawing
mechanism.