Análisis del flujo en la turbina de un turbocargador por medio de CFD

The project begins with a completely theoretical chapter, explaining the thermodynamics, the triangles of speed, the development of the flow in radial turbines and their coefficients of flow and load. The theory concerning the CFD, the governing equations and how this tool is used in the turbomachinery analysis is also given. A turbine of radial type and variable geometry was analyzed. This type of simulations is usually divided into three stages, the first is the pre-processing stage, where the geometry of the computational domain is determined, where the angular positioning of the stator vanes was defined, the selection of the mesh typology , of the turbulence model, the boundary conditions methods and the rotor modeling strategy. The second stage is that of processing, where a theoretical approach to the discretization using the software used was carried out, concepts were also specified concerning the validation and verification of CFD simulations. The last stage consists in the post-processing of the simulations, that is, where the maps of turbine performance, corrected mass flow and power were obtained, and the comparison with the experimental results was established to calculate the percentage error . Finally, as part of the post-processing, an analysis of the three-dimensional flow in the stator and the rotor is carried out, in order to understand the behavior in this specific geometry

• Fecha de publicación: 2019
• Institución: Universidad de América
• Repositorio: Lumieres
• Idioma: spa
• OAI Identifier: oai:repository.uamerica.edu.co:20.500.11839/7323
• Acceso en línea: https://hdl.handle.net/20.500.11839/7323
• Palabra clave: Dinámica de fluidos computacional; Turbina radial; Geometría variable; Mapas de desempeño; Computational fluid dynamics; Radial turbine; Variable geometry; Performance maps; Tesis y disertaciones académicas
• License: Atribución – No comercial