Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
Transient Numerical Simulation of a Liquid-Vapor Mixture with Interphase Mass Transfer
Submission Author:
Bruno Rodrigues , SP
Co-Authors:
Bruno Rodrigues, Eugênio Spanó Rosa
Presenter: Bruno Rodrigues
doi://10.26678/ABCM.ENCIT2018.CIT18-0045
Abstract
A transient flow simulator for a pure substance in thermal equilibrium with liquid and gas phases using the drift-flux model is developed. An eight-order compact finite difference scheme is used to evaluate the solution numerically with an artificial viscosity term to stabilize the solution close to discontinuities. The model is validated against two tests. The first test consists of a steady state solution from the literature. The flow is adiabatic with constant mixture enthalpy in steady state conditions. The second test uses a two-phase shock tube case found in the literature. The maximum errors were of 6% due to differences on the property evaluation. The present model was also shown to sharply capture discontinuities in the numerical solution and also due to the difference in order of the two numerical schemes.
Keywords
drift-flux model, transient simulation, Gas-Liquid Flow, compact scheme, interphase mass transfer
