Estudio del comportamiento de un fluido multifásico mediante análisis por elementos finitos para una t de mezcla en una planta térmica

Abstract

The purpose of this thesis is to study the behavior of a multiphase fluid when joined in a mixing tee of a thermal plant using finite element analysis, where the mixing of water in liquid state and air occurs. For this study, specialized computational tools are used to evaluate both the behavior of the multiphase fluid and the thermal gradients generated in the component. The development of this document is structured through the following stages: initially, an exhaustive bibliographic review is carried out on finite element analysis especially applied to mixing tees, with an emphasis on thermal and fluid analysis. Subsequently, a specific case study is defined based on real operating conditions for a water-air mixture, establishing the operating parameters that delimited the scope of the project. The design and modeling of the mixing tee for the thermal plant is carried out applying ASME B16.9, ASME B31.1 and B36.10 standards, using Autodesk Inventor Professional 2024. The model is exported to Ansys Workbench to perform the corresponding analyses. Simulations are run using the CFD module to study the behavior of the fluid mixture, and the Ansys Fluent module is used to evaluate the thermal gradients under study. The results analysis focuses on the behavior of the fluids when mixed, identifying flow variations and their thermal gradients. This provides valuable information for understanding the thermomechanical behavior of the mixing tee in relation to its integrity in thermal power plant applications.