EXPERIMENTAL AND SIMULATION INVESTIGATION FOR PERFORMANCE OF A SMALL-SCALE MODEL OF BARE AND SHROUDED HAWT

The HAWTs are existed in different sizes and they used in a different requirements depending on the applications HAWT in scale of 1:6.5 of original model was presented. The scale model of HAWT and a suitable diffuser as a shroud for its, were fabricated and experimented in wind tunnel in two forms, bare were conducted using a new method to power calculation at a different wind velocities ranged 5 - 9 m/s with focusing on a two wind speeds, 7 m/s and 8 m tests in terms of power coefficient an increasing in the power coefficient of the shrouded HAWT model 1.52 compare to the bare model one. On another hand, the experiments results were validated with CFD simulation results for all cases Moreover, CFD provided a clear visualization