Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
ASSESSMENT OF THE DYNAMIC PRESSURE EFFECT IN 1D TWO FLUID MODEL FOR A VERTICAL ANNULAR GAS-LIQUID FLOW
Submission Author:
Angela Nieckele , RJ
Co-Authors:
Joao Carneiro, Eric Fontalvo
Presenter: Angela Nieckele
doi://10.26678/ABCM.ENCIT2016.CIT2016-0155
Abstract
Vertical annular flows are very common in oil and nuclear industries. To predict this pattern of two-phase flow, the Two Fluid Model can be applied. However, it is well known that the resulting system of equations is ill-posed. Therefore, at the present work, a dynamic pressure term is included on the liquid phase to help increase the region at which a grid-independent solution can be found. The conservation equations are discretized with the finite volume method, with a first order time integration and second order TVD spatial discretization. The stabilizing effect of the dynamic pressure is addressed. Flow parameters such as pressure drop, film thickness and wave characteristics numerically obtained are compared against available experimental data, presenting good agreement.
Keywords
Vertical Anular Flow, Two Fluid Model, Dynamic pressure, 1D, Two-phase Flow, Vertical Anular Flow, Two Fluid Model, Dynamic pressure, 1D, Two-phase Flow, Vertical Anular Flow, Two Fluid Model, Dynamic pressure, 1D, Two-phase Flow
