Investigation On The Enhancement Of The Performance Of The Savonius Rotor Depends On Partial Differential Equation. Analyze The Pressure On Surface Of Blade

Actual wind turbine is divided into two groups, Horizontal axis wind turbine(HAWTs) and Vertical axis wind turbine (VAWTs). Vertical axis wind turbine consistof two types of configuration such as the savonius rotor work on the principle of Dragtype configuration and Darrieus rotor work on the principle of lift-type configuration.Savonius wind turbine is Drag type of vertical axis rotor, comparatively lowefficiency than the horizontal rotor. The advantage of this rotor is that it is cheaper thanthe wind turbines with Horizontal axis. Nevertheless, such rotor is facing problems dueto its efficiency. Most researchers used different type of methods to improve theperformance of the savonius rotor. Some scientists increase the number of blades ofsavonius rotor in order to increase the efficiency of savonius rotor. Some scientists workon geometry of Savonius drag machine. Savonius rotor is that type of drag machineswhich start at low wind speed. Because of this benefit the savonius drag machinecapture more wind energy from wind. The capability of this rotor is to capture morewind energy and convert it into usable energy as compared to other type of rotor.Savonius drag machine have low efficiency due to its “negative torque” which acton the concave side of savonius rotor. Due to this negative torque the efficiency ofsavonius rotor is low.Main goal of my thesis is to improve the performance of savonius rotor. For thispurpose we used one savonius rotor with five different parameters. Generally thediameter of savonius rotor is50mm. Beacuse it is important to judge the aerodynamicperformance of savonius rotor.Diameter play important role in rotor to check the performances. First diameter ofrotor is100mm; second and third diameter is150mm and175mm respectively. Lastdiameter is200mm. For these rotors we check the performances.Firsts modified the blades of savonius drag machine using Catia software. Aftermodified the structure send to ICEM-Cfd for mashing. ICEM-Cfd gives good mash ascompared to other software like Gambit. Then aerodynamic performance is analyzed byusing ANSYS CFD.175mm diameter rotor gives the best efficiency with the gap ratio0.15then theother four rotors by ANSIS FLUENT analysis. It means that175mm is best rotor toproduce energy. It is a new type of rotor. The pressure on concave side is more which show increase in performance. If the gap ratio of rotor is big and the diameter issmall then the blade didn’t take more energy from wind as in the case of200mm rotor.200mm have low efficiency than other rotors.The equations of continuity and Reynolds Averaged Navier-Stokes together with therealizable K-epsilon turbulence model will help in the judgment of the case. Theresults obtained shows that partial differential equation is important in the enhancementof the performance of the savonius rotor. In proving the above case, the study willconsider simulation Computerized Fluid Dynamics, which will help in analyzing theflow, attributes of the rotor.These experiments will be utilized as a basic root for further work on parametricanalyses optimization of the Savonius drag rotor. The simulation required to supposethe effect of structure and full scale simulation to obtain the best performance. Theparametric study to optimize the rotor performance can be started from this point as the3D simulation has been validated thoroughly.