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    OPTIMISATION OF VERTICAL AXIS WIND TURBINE BY USE INOVATIVE DESIGN
    (2022-01) Abusannuga, Hashem Ibrahim M
    In the context of interests in the sector of renewable energies in general and wind energy in particular, the topic of this thesis revolved around the design and manufacture of a unique system of vertical axis wind turbines and its comparison with other systems known to specialists and those interested in the sector of wind energy. This thesis is divided into seven stages, which are sequenced as follows. Work began with the selection of an appropriate analytical mathematical model. The Multi-Stream Tube model was chosen, where modifications were made to match the target study cases. In the second stage, a programming process for the Multi-Stream Tube model was carried out by Microsoft Visual Software, Therefore, the computer program was designed and called Al-Hashem VAWT Soft. Before starting the third stage, the quality of the results of the computer program was verified by comparing its theoretical results with previous reliable laboratory results. The third stage included a pneumatic kinematic analysis using the designed computer program, where three engineering designs of vertical axis propellers were studied, and they are the original Darrieus rotor in the shape of a parabolic, the modified Darrieus rotor that takes the shape of rectangle or square and an innovative air rotor in this thesis where half of its area is the upper is similar to the trapezoid, as well as the lower. Fourth stage the Solidwork program was used to design three types of wind rotor with different geometric shapes in order to be used in the fifth stage. The three designs are slant straight blade vertical axis wind turbine with inclination angels 35 Degree, 55 Degree and 85 Degree. In the fifth stage, a computer program called Ansys Fluent was used in order to work on physical modeling of designs extracted from Solidworks and to compare them physically in terms of the effect of aerodynamic on them during their rotation. Based on all of the above stages, a prototype was manufactured, which is an innovative vertical axis air fan. During this thesis, its geometric shape can change to 64 configurations by changing the angles of its blades. In the context of this thesis, it was called Sannuga system SS-VAWT 01, where “Sannuga” is relative to the surname of the author of this thesis, “SS” stands for Slant Street Blade, “VAWT” is a vertical axis wind turbine and “01” indicates that this is the first version of the design. In the eighth and final phase, preliminary field tests of the Sannuga system SS-VAWT 01 prototype were conducted. A comparison was made between the findings of some of the eight stages, the results were compatible, and one of the most important results obtained was to determine the optimal geometric shape of a vertical axis wind rotor in terms of aerodynamic efficiency. ?