Estudio Experimental de Patrones de Flujo Bifásico Aire-Agua en Tuberías Horizontales y Ligeramente Inclinadas

Abstract

ResumenSe realizó un estudio experimental de patrones de flujo bifásico aire-agua en tuberías horizontales y ligeramente inclinadas. Se realizaron 493 experimentos de flujo bifásico aire-agua de los cuales 191 corresponden a tubería horizontal y 302 corresponden a flujo ascendente. Las distribuciones espaciales de los experimentos incluyen los patrones de flujo estratificado liso y ondulado, tapón, anular y burbuja dispersa. Se desarrollan mapas de patrones de flujo experimentales para cada ángulo de inclinación y se evalúa la capacidad de predicción de cuatro modelos mecanicistas y dos modelos de correlación utilizados comúnmente en la literatura para determinar patrones de flujo. Comparando con los valores experimentales se encuentra que los modelos seleccionados tienen un porcentaje de acierto mayor al 75 %. Palabras clave: flujo bifásico, tuberías horizontales, patrones de flujo, flujo aire-agua Experimental Study of Air-Water Two-Phase Flow Patterns in Horizontal and Slightly Inclined Pipelines AbstractAn experimental study in horizontal and slightly inclined pipelines was performed. A total of 493 airwater two-phase flow experiments were carried out, of which 191 correspond to horizontal pipelines and 302 correspond to upward flow. The space distributions of the experiments include the smooth and wavy stratified, slug, annular and dispersed bubble flow patterns. Experimental maps of the flow patterns for each inclination angle are developed and the prediction capability of four mechanistic models and two correlating models commonly used in the literature for determining flow patterns are evaluated. Comparison between calculated and experimental values indicates that the selected models have a success percentage greater than 75%.

Hydrodynamic computational evaluation in solar tubular photobioreactors bends with different cross section

“…For the microalgae to receive the necessary photonic energy to carry out its photosynthetic process and provide a homogeneous concentration of nutrients that increase the production of biomass, it is necessary to make the mixing of the microalgae culture in the solar collectors of the TFBR. For this process, tools such as static mixers are commonly used (García & Haoulo, 2009;Leeuwner & Eksteen, 2008;. As an alternative to this mixture system, this work proposes the utilization of noncircular solar collectors.…”