Eventos Anais de eventos
JEM 2019
5th Multiphase Flow Journeys
HYDRODYNAMICS OF AN AIR-WATER SLUG FLOW RISINGTHROUGH STAGNANT LIQUIDS
Submission Author:
Izabela dos Santos , PA , Brazil
Co-Authors:
Izabela dos Santos, Antônio da Cruz, Marcelo de Oliveira e Silva
Presenter: Izabela dos Santos
doi://10.26678/ABCM.JEM2019.JEM19-0016
Abstract
An experimental and numerical study on the hydrodynamics of air-water slug flow in vertical column stagnant liquid is presented in this paper. A fast film technique is applied to obtain parameters of the flow of a single bubble rising stagnant water under laminar flow inside a circular tube for different entry volumes of air, including the rising velocity, bubble length, and liquid film thickness. The numerical study is based on the phase field model solving the momentum and Cahn-Hilliard equations. The phase field model was applied to simulate flows with the same characteristics as the experimental ones, as well as extrapolate it to study flow conditions that are not easily possible in an experimental approach. Due to the lack of experimental data on flows with high values of Nf, simulations will be extended to cover different column diameters and Eötvös numbers.
Keywords
Slug Flow, liquid film, Phase-Field Model, Taylor Bubble
