Wind energy has lately been one of the world's leading outlets of clean energy for producing power in potential environments across the globe. Academics currently undertake numerous analysis practices to improve and refine current wind turbine designs by means of advanced and diverse computational techniques. Various computations tools based on Computational fluid dynamics are available. However, these require a lot of computational time and hardware resources. On the other side, readily accessible basic methods like QBlade are computationally cheap and could be used for efficiency and design analysis of wind turbines on the horizontal and vertical axis. The present study is based on the variable pitch study of vertical axis wind turbine (VAWT) of straight blade NACA0018 airfoil for low speed utilizing QBlade software. The results are validated and compared with the experimental results and it was found to be in good agreement with them for TSR ranging from 1 to 6.

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In this paper, we have studied p-Sasakian Einstein manifold which satisfy the condition r-n(n-1), a + 2(n-1)b  0 i. e. the constant scalar curvature r. also the p-Sasakian Einstein manifold satisfying div = 0 have studied. where is quasi-conformal curvature tensor and r is the scalar curvature.