Journal ArticleDOI
Assessment of closure relations on the numerical predictions of vertical annular flows with the two-fluid model
Eric Gonzalez Fontalvo,Rodrigo Luís Formosinho Castello Branco,João N. E. Carneiro,Angela O. Nieckele +3 more
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TLDR
In this article, different closure relations in the one-dimensional two-fluid model were investigated in order to assess the effect on the numerical simulation of vertical annular flows, including the formation and propagation of waves at the gas-liquid interface.About:
This article is published in International Journal of Multiphase Flow.The article was published on 2020-05-01. It has received 9 citations till now. The article focuses on the topics: Upwind scheme & Finite volume method.read more
Citations
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A numerical analysis of the characteristics of interfacial waves on the onset of flooding in an inclined pipe
TL;DR: In this paper, the effects of contact angle and liquid velocity on flooding in a 30° inclined pipe were studied with a two-dimensional computational fluid dynamic model, and an analytical forces model was proposed on the flooding waves, including gravity, the pressure of the gas core, pressure variations in the liquid film, wall shear force, interfacial shear forces and surface tension force.
Journal ArticleDOI
Stability analysis of vertical annular flows with the 1D Two–Fluid Model: effect of closure relations on wave characteristics
TL;DR: In this article , a stability analysis of the transient one-dimensional Two-Fluid Model was performed for vertical annular flows, where a viscous approach of differential and discretized formulations was analyzed.
Journal ArticleDOI
A Two-Fluid Model for High-Viscosity Upward Annular Flow in Vertical Pipes
Joseph X. F. Ribeiro,Ruiquan Liao,Aliyu M. Aliyu,Salem K. B. Ahmed,Yahaya D. Baba,Almabrok A. Almabrok,Archibong Archibong-Eso,Zilong Liu +7 more
TL;DR: In this article, the influence of estimates obtained from nine interfacial friction factor models on the accuracy of predicting pressure gradient, film thickness and gas void fraction was investigated by utilising a two-fluid model.
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Numerical study of statistically developed gas-liquid intermittent flows by the lens of three-dimensional simulations
TL;DR: In this paper , the volume of fluid (VOF) method was used to determine the 2D velocity fields of laminar and turbulent flows with a single slug unit cell, with periodic boundary conditions under imposed pressure gradient and overall void fraction.
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Comparison of well-posedness criteria of two-fluid models for numerical simulation of gas-liquid two-phase flows in vertical pipes
TL;DR: In this article , the authors compare the well-posedness criteria of the free-pressure two-fluid model, single-pressure 2F model, and two-pressure 3F model in a vertical pipe.
References
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Book
Numerical heat transfer and fluid flow
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
Book
An Introduction to Computational Fluid Dynamics: The Finite Volume Method
TL;DR: This chapter discusses the development of the Finite Volume Method for Diffusion Problems, a method for solving pressure-Velocity Coupling in Steady Flows problems, and its applications.
Journal ArticleDOI
A model for predicting flow regime transitions in horizontal and near horizontal gas-liquid flow
Yemada Taitel,A. E. Dukler +1 more
TL;DR: In this article, a generalized flow regime map based on this theory is presented, which is used for determining flow regime transitions in two-phase gas-liquid flow, and the mechanisms for transition are based on physical concepts and are fully predictive.
Book
An introduction to computational fluid dynamics : the finite volume method
TL;DR: The Finite Volume Method for Diffusion Problems as mentioned in this paper is a finite volume method for convection-diffusion problems with boundary conditions, and it has been applied in a variety of applications.