The Effect of Blade Angle Deviation on Mixed Inflow Turbine Performances

The choice of blades for mixed turbines is to achieve the required deflection with minimal losses. In addition, it necessary that blade functions without a detachment in wide area outside nominal operating point machine. profile study, satisfy conditions relating fluid mechanics and those possibility realization construction. work carried out presents effect deviation angle on geometric shape performance inflow turbine keeping same rotor casing order improve its performances. It was remarked efficiency proportional angle’s increase, but became heavy. has been determined performances decreases dramatically starting from −20° 100% machine load. urged avoid relying angles greater than −20 as values angles. study noted maximum obtained output power related highest specific optimum design case (−35° angle) due increase contact surface between fluid, problem gets little heavy (4.37% weight gain). Among recommendations, attention given more significant absolute exit kinetic energies, -10° −20°, where an exhaust diffuser recommended use recover part into expansion ratio. These simulation results were using CFD calculation code-named CFX.15. This code allowed resolution averaged dynamic equations governing stationary, compressible, viscous internal flow.