Estudio de fuerzas de arrastre en intercambiador de carcasa y tubos: aproximación numérica del coeficiente de arrastre en una tubería escalonada en un intercambiador de carcasa y tubos.

Abstract

The following work shows the estimation of the drag coefficient in a staggered tube arrangement by means of a computational model developed in ANSYS Fluent, to represent what happens inside a shell and tube heat exchanger. In Chapter 1, a literature review is developed for the definition of the drag forces and the mathematical calculation of the drag coefficient, as well as the definition of a shell and tube heat exchanger with the dimensions that the tube arrangement must have in its interior according to the TEMA code. Chapter 2 shows the development of a computational model to estimate the drag coefficient with ANSYS software using as reference a previous study that has already been validated, detailing the steps to follow starting from the geometrical configuration of the tube array, boundary conditions, meshing, reference values and the verification with the previous study. In the last chapter the numerically obtained results of the drag coefficient by means of the validated simulation and the graphic results found by means of ANSYS Fluent, where the Reynolds number and the pitch/diameter ratio (τ) are varied in order to analyze the variation of the drag coefficient, are shown by means of tables.