Estudio de impulsores de una bomba hidráulica de agua para que funcione como turbina: estudiar la gemetría de impulsores de bombas para que funcionen como turbinas.

Abstract

In the present study of curricular integration, the different methods of impeller optimization existing in the literature are analyzed, the geometric model extracted from the SAER NCB 65-200N A pump, helps us to generate the numerical simulation in the OpenFOAM software for which it is It is necessary to select the correct computational domain and discretize it, to mesh the computational domain this is done using the cfMesh tool which allows us to control mesh parameters and in turn create hybrid meshes which are used in the present study. The k – omega SST turbulence model is the selected model, given its advantages of being able to capture phenomena that take place near the walls and in free flow. In order to establish the initial conditions obtained to generate the numerical simulation, these were obtained through empirical expressions obtained through a test bench carried out in another study, while for the boundary conditions, these were determined according to the geometry. Finally, to evaluate the advantages and disadvantages obtained in the simulations, the pressure and speed contours of each of the optimized geometrics were obtained. To continue the process, the total efficiency of the pump-turbine was calculated, whose maximum among all the simulations obtained was 79.53 % with a flow rate of 0.0266 [m3/s] and a rotation speed of 1 819 [rpm], while in the other simulations slightly lower efficiencies were obtained.