Desarrollar un modelo CFD para el análisis del comportamiento del fluido en tuberías del banco de pérdidas de turbomaquinaria hidráulica y laboratorio.

Abstract

A Computational Fluid Dynamics model (CFD) was developed in this thesis for the analysis and simulation of the velocity profiles in the Bank losses of the hydraulic turbomachinery laboratory. The velocity profile is the simulation of the internal fluid behavior in the bank of PVC pipes. The model developed for the simulation of the velocity profiles is based on the incompressible flow using the Navier-Stokes equations, they have the principle of conservation of mass and amount of movement. ANSYS CFX program was used in the solution of these equations based in three stages for the numerical counting such as: Pre-processing, processing and post- processing. The Navier Stokes equations are solved by means of the numerical simulation by the finite volumes method. The discretization of the domain was carried out with a not structured meshing by the tetrahedral method. The fluid flow is solved in stationary analysis at the processing stage. The fluids flow in the three sections of pipe is analyzed in the simulation, the diameter differs, in the openings taken in the flow fluids control in pipes with the acquired data in the test bank. The validation of the results, was carried out with the analytical calculation of the velocity profile through the acquired data on the test bank and with the results abtained in the simulation by ANSYS CFX, with a criterion of the engineering judgment using the simulation.