Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
DEVELOPMENT OF A DYNAMIC MASKING PROCEDURE FOR THE TAYLOR BUBBLE IDENTIFICATION IN THE PIV/LIF TECNHIQUE APPLICATION FOR SLUG FLOW
Submission Author:
Emilio Paladino , SC
Co-Authors:
Rafael Franklin Lazaro de Cerqueira, Emilio Paladino, Bruno Ynumaru, Clovis Maliska
Presenter: Emilio Paladino
doi://10.26678/ABCM.ENCIT2018.CIT18-0788
Abstract
This work presents a technique for the generation of dynamic masks for the measurement of velocity fields around Taylor bubbles by the PIV/LIF technique. The characterization of the flow around a Taylor bubble is important for the understanding of the physical phenomena associated to slug flow patterns. For the acquisition of averaged liquid velocity fields it is necessary to remove the Taylor bubble from the images acquired by the PIV/LIF technique. The usual practices for this task are the application of a static mask that does not take into account the deformation of the Taylor bubble. However, none of the techniques found in the literature is able to deal with flows with dispersed bubbles and high inverse viscosity numbers which presents great fluctuations in the velocity field and also in the shape of the Taylor bubble. Thus, the present work aims to develop a method for the generation of dynamic masks for the removal of Taylor bubbles in the PIV/LIF technique in flows with dispersed bubbles and high inverse viscosity number.
Keywords
Particle Tracking Velocimetry, PIV, Taylor Bubble, Slug Flow, dynamic masking
