Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Study of the dynamics of stratified liquid-liquid horizontal pipe flow via particle image velocimetry
Submission Author:
Pedro José Miranda Lugo , SP , Brazil
Co-Authors:
Pedro José Miranda Lugo, Jorge enrique Arrollo Caballero, MARLON MAURICIO HERNANDEZ CELY, Oscar Mauricio Hernandez Rodriguez
Presenter: Pedro José Miranda Lugo
doi://10.26678/ABCM.ENCIT2022.CIT22-0300
Abstract
Stratified liquid-liquid flow is a flow pattern observed in many industrial applications. The complexity of two-phase flow often limits rigorous numerical modeling of liquid-liquid flow in actual practice. One of the challenges is the prediction of velocity profiles related to the average velocities of the phases, pressure drop, and heat transfer. Another issue is the values of the shape factors, which are related to flow pattern transition. Several experimental studies have focused on measuring hydrodynamic characteristics of stratified liquid-liquid flows in horizontal or slightly inclined pipes; most works have focused on transitional/turbulent flow regimes for the oil and water phases. We will study the dynamics of a horizontal stratified oil-water pipe flow via Particle Image Velocimetry (PIV), Planar Laser-Induced Fluorescence (PLIF), and high-speed video recording. The PIV technique will be used to obtain non-intrusive instantaneous local velocity measurements of the lateral flow field, from which the mean axial and radial velocity components, root mean squared velocity, and Reynolds stresses can be estimated. The PLIF technique will provide the liquid-liquid interface shape. The interface's height will be determined by image processing algorithms. In order to offer a preliminary discussion on the dynamics of a horizontal stratified liquid-liquid pipe flow, without our experimental results, experimental data reported in the literature were collected and analyzed. The oil and water phases' laminar/transitional and turbulent/turbulent flow regimes were considered. For our ongoing experiments, we expect the mean velocity profiles to show both laminar and turbulent flow characteristics and interesting interfacial interactions between the phases. Regions of high-intensity turbulence are expected near the pipe wall and liquid-liquid interface. Furthermore, one may expect the presence of secondary flow.
Keywords
oil-water flow, PIV, PLIF, Stratified flow, Velocity Profile
