76 International Journal for Modern Trends in Science and Technology Static Structural Analysis of Spherical – S Turbine by using ANSYS Workbench Mulukuntla Vidya Sagar 1 | Nalla Suresh 2 | Kanjarla Shyam Kumar 3 1,2,3 Mechanical Engineering Department, Warangal Institution of Technology and Science, Warangal, Telangana, India To Cite this Article Mulukuntla Vidya Sagar, Nalla Suresh and Kanjarla Shyam Kumar, “Static Structural Analysis of Spherical – S Turbine by using ANSYS Workbench”, International Journal for Modern Trends in Science and Technology, Vol. 03, Issue 11, November, 2017, pp.-76-81. The main objective of this work is to investigate and analyse the stress distribution of Spherical – S turbine. In this paper static analysis is done by using to different materials (Structural Steel, Stainless Steel and Aluminium Alloy). The parameter used for the analysis is forces acting on turbine blades and material properties of Spherical – S turbine. A general Spherical-S turbine configured to rotate transversely with in a cylindrical pipe under the power of fluid flowing either direction there through is operatively coupled with rotating machine or generator to produce electricity. Two vanes are placed to the shaft in the centre of spherical blades to control the flow. The blades of the spherical turbine are aerofoil in cross-section to optimise hydrodynamic flow to minimise cavitation and to maximise conversion from axial to rotating energy. Turbine fail mainly due to mechanical stresses and thermal stresses. The analysis predicts that due to forces whether the blades of the Spherical – S turbine may be damaged or broken during the operating conditions. The model of Spherical – S turbine is created using CREO2.0 software. CAD model is then imported into ANSYS software for geometry and meshing purpose. The FEA performed by using ANSYS 14.5(ANSYS WORK BENCH). KEYWORDS: : Spherical-S turbine, Static,Aluminium, Cavitation, Aerofoil, CATIA V5, ANSYS14.5. Copyright © 2017 International Journal for Modern Trends in Science and Technology All rights reserved. I. INTRODUCTION TURBINE: A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. A turbine is a turbo machine with at least one moving part called a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor. There are two main types of hydro turbines: impulse and reaction. The type of hydropower turbine selected for a project is based on the height of standing water referred to as "head" and the flow, or volume of water, at the site. Other deciding factors include how deep the turbine must be set, efficiency, and cost. Impulse turbine: The impulse turbine generally uses the velocity of the water to move the runner and discharges to atmospheric pressure. The water stream hits each bucket on the runner. There is no suction on the down side of the turbine, and the water flows out the bottom of the turbine housing after hitting the runner. An impulse turbine is generally suitable for high head, low flow applications. Impulse turbines change the direction of flow of a high velocity fluid or gas jet. The resulting impulse spins the turbine and leaves the fluid flow with diminished kinetic energy. There is no pressure change of the fluid or gas in the turbine blades (the moving blades), as in the case of a steam or gas turbine, all the pressure ABSTRACT Available online at: http://www.ijmtst.com/vol3issue11.html International Journal for Modern Trends in Science and Technology ISSN: 2455-3778 :: Volume: 03, Issue No: 11, November 2017