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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
COMPARISON OF NUMERICAL SIMULATIONS WITH EXPERIMENTAL DATA FOR VERTICAL ANNULAR AND CHURN GAS-LIQUID FLOWS
Submission Author:
Larissa Steiger de Freitas , SC
Co-Authors:
Larissa Steiger de Freitas, Marcus Vinícius Canhoto Alves, Rafael Rodrigues Francisco
Presenter: Larissa Steiger de Freitas
doi://10.26678/ABCM.ENCIT2020.CIT20-0458
Abstract
This work presents transient and three-dimensional investigations of the annular and churn liquid-gas flow patterns. The continuity and Navier-Stokes equations for each phase are solved together with an advection equation for gas volume fraction. A hybrid algorithm that combines the characteristics of the Eulerian-Eulerian (VOF) and Eulerian-Lagrangian models, called multiphaseEulerFoam, available within the OpenFOAM source code, is used for the simulations. The simulations are based in the experiments by Govan et al. (1991) that, are used as a basis to introduce the initial and boundary conditions. As a preliminary results absolute pressure and the void fraction for the annular flow pattern are presented in different sections of the test section. The simulation results show a reasonable agreement with the literature.
Keywords
Annular flow, Churn Flow, OpenFOAM, multiphaseEulerFoam
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