Diseño por elementos finitos de una roto bomba accionada con una turbina Pelton para riego de cultivos en los sectores vulnerables

Abstract

The present work of investigation is about the design of a Pelton turbine that works with conditions of net jump of 45 m and flow of 0.05 m3 / s, was realized with the module CFD to determine the conditions of operation like pressure, speed, turbulence. In the design of the turbine consists of the geometry of the spoons, the dimensions of the impeller, injector, injector needle and mechanical dimensioning of the turbine shaft. The CFD analysis was performed taking into account the considerations that the turbine works with biphasic flow, ie there is presence of water and air, was used rotating mesh to rotate the impeller, stationary mesh for injectors and part of the Case. A study was carried out on the convergence of the mesh and its influence on the results, as well as the different models of turbulence available. These results were validated by calculating the efficiency of the turbine and the triangle of velocities at the exit of the turbine spoons, obtaining errors of 12.19% and 8.43%, respectively.