Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL SIMULATION OF THE BUBBLE PEN PHENOMENON
Submission Author:
João Souza , PA
Co-Authors:
Marcelo de Oliveira e Silva, FERNANDA GOMES, LUIS PEREIRA, luany braga, Fernanda Silva, João Souza, Kaynan Leal
Presenter: FERNANDA GOMES
doi://10.26678/ABCM.ENCIT2018.CIT18-0801
Abstract
This paper presents preliminary numerical simulations of the bubble pen phenomenon. The numerical treatment is being developed with OpenFOAM free code software, based on the finite volume method for discretizing physical and temporal space. The Eulerian-Eulerian approach for incompressible multiphase flows already implemented in the software through the twoPhaseEulerFoam solver developed by Rusche (2003) is used to simulate dispersed flows, whose terms of change of momentum between the phases (drag, support and virtual mass) are included in their modeling. The phenomenon is reproduced numerically, adopting the same experimental characteristics of research carried out by the PPGEM. In order to validate the code, numerical profiles of void fraction and vertical velocity of the gas phase at three heights are compared with experimental data obtained in PPGEM. The experimental behavior of the vacuum fraction and gas velocity profiles were to some extent captured by the numerical treatment of the twoPhaseEulerFoam solver using some calibrations made in the model. However, a better understanding of the problem physics and the OpenFOAM software are necessary to obtain more satisfactory results.
Keywords
Bubble Pen, multiphase flow, OpenFOAM
