Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Numerical Investigation of Natural Gas Mixture Through a Supersonic Separator
Submission Author:
João Victor Ota de Oliveira , SP
Co-Authors:
Lucas de Souza Melo, João Victor Ota de Oliveira, Reinaldo Marcondes Orselli, Ricardo Galdino da SIlva, Bruno Carmo
Presenter: Administrador ABCM
doi://10.26678/ABCM.COBEM2021.COB2021-1218
Abstract
Supersonic separators are devices used for separating heavier components of gas mixtures, usually applied for the process of natural gas extraction to separate high concentrations of CO2. This technology is based on supersonic gas expansion allowing the condensation of some components mixed with the gas. Through centrifugation, the liquid droplets formed from condensation are carried towards the wall to be captured by attached collectors, thus, enabling the separation of the condensed component from the gas mixture. In this context, predicting and analyzing the gas flow behavior in the supersonic gas separator device is the main proposal of the present work, which is done by carrying out numerical simulations. The configuration considered for the numerical simulations is of an axisymmetric convergent-divergent nozzle with a collector and an outlet diffuser. At the inlet section, we impose a swirling flow which generates the centrifugation needed to separate the condensate. The numerical simulations are based on the Finite Volume Method, and, to numerically solve the turbulent flow, the flow governing equations with turbulence modeling (RANS equations) are considered. Attributes such as energy losses, swirl strength, and shock wave topology, and position are analyzed.
Keywords
Compressible flow, Computational fluid dynamics (CFD), natural gas, Shock wave, Supersonic separators
