Abstract:
Turbines are one of the most important means of
producing clean energy, as they do not cause any negative
emissions affecting the environment. Recently, the need
to design turbines capable of facing strong winds has
appeared because the currently designed turbines must
be cut off in such circumstances. This study aims to find
the best design parameters and investigate the efficiency of the jet turbine at high wind speed conditions. SolidWorks
and MatLab are used to design and analyze small jet wind
turbines. The design parameters were chosen to obtain the
best efficiency. The turbine diameter is 0.5 m, and the short
blade length helps withstand the generated stresses due to
strong wind, especially fatigue stress, and resists bending.
Blade pitch angle beta starts from 2° from the vertical axis
at the hub and changes harmonically along the length to
end at an angle of 88° at the blade’s tip to allow air to pass
through and not form a wall. The blade number has chosen
15 blades, corresponding to the Betz limit, to obtain the
maximum power coefficient. As a result, the assigned
power was obtained at a wind speed of 28 m/s. At a lower
wind speed, it will work with acceptable efficiency and
more efficiently at higher speeds. Therefore, this turbine
is suitable to use in such cases.
