On the multidimensional modeling of gas-liquid slug flows

2002 ◽  
Author(s):  
Henryk Anglart ◽  
Michael Z. Podowski
Keyword(s):  
Liquid Slug ◽  
Multidimensional Modeling ◽  
Slug Flows

scholarly journals Hydrodynamics of Gas–Liquid Slug Flows in a Long In-Plane Spiral Shaped Milli-Reactor

2020 ◽  
Vol 54 (1) ◽  
pp. 25-47 ◽  
Author(s):  
Mei Mei ◽  
Francisco Felis ◽  
Gilles Hébrard ◽  
Nicolas Dietrich ◽  
Karine Loubière
Keyword(s):  
Liquid Slug ◽  
Slug Flows ◽  
Plane Spiral

Numerical Simulation of Two-Phase Slug Flows in Microchannels

2009 ◽  
Author(s):  
A. Mehdizadeh ◽  
S. A. Sherif ◽  
W. E. Lear
Keyword(s):  
Surface Tension ◽  
Slug Flow ◽  
Stokes Equations ◽  
Pressure Fluctuations ◽  
Water Interface ◽  
Liquid Slug ◽  
Complex Flow ◽  
Two Phase ◽  
Air Water Interface ◽  
Slug Flows

In this paper the Navier-stokes equations for a single liquid slug have been solved in order to predict the circulation patterns within the slug. Surface tension effects on the air-water interface have been investigated by solving the Young–Laplace equation. The calculated interface shape has been utilized to define the liquid slug geometry at the front and tail interfaces of the slug. Then the effects of the surface tension on the hydrodynamics of the two-phase slug flow have been compared to those where no surface tension forces exist. The importance of the complex flow field features in the vicinity of the two interfaces has been investigated by defining a non-dimensional form of the wall shear stress. The latter quantity has been formulated based on non-dimensional parameters in order to define a general Moody friction factor for typical two-phase slug flows in microchannels. Moreover, the hydrodynamics of slug flow formation has been examined using computational fluid dynamics (CFD). The volume-of-fluid (VOF) method has been applied to monitor the growth of the instability at the air-water interface. The lengths of the slugs have been correlated to the pressure fluctuations in the mixing region of the air and water streams at an axisymmetric T-junction. The main frequencies of the pressure fluctuations have been investigated using the Fast Fourier Transform (FFT) method.

Heat transfer model for gas–liquid slug flows under constant flux

2010 ◽  
Vol 53 (15-16) ◽  
pp. 3193-3201 ◽  
Author(s):  
Patrick A. Walsh ◽  
Edmond J. Walsh ◽  
Yuri S. Muzychka
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Model ◽  
Transfer Model ◽  
Liquid Slug ◽  
Constant Flux ◽  
Slug Flows

scholarly journals Modelling of Transient Slug Flow in Pipeline

1997 ◽  
Author(s):  
T. N. Wong ◽  
Y. K. Yau
Keyword(s):  
Experimental Data ◽  
Theoretical Prediction ◽  
Slug Flow ◽  
Valve Closure ◽  
Liquid Slug ◽  
Proposed Model ◽  
Pressure Surge ◽  
Slug Flows ◽  
Gas Expansion ◽  
Good Agreement

An approach to model slug flow in horizontal pipeline is presented which is based on a transient Lagrangian formulation. The effect of slug growth is modelled by considering the gas expansion, picking up of liquid film ahead of the slug and shading of liquid from the slug tail. This method is particular useful for slug flows approaching the end of a pipeline. The validation of the theoretical prediction is confirmed by comparing with the experimental measurement. The proposed model is further used to analyse shock phenomenon caused by a rapid valve closure in a gas-liquid slug flows system. The results show that the pressure surge is highly dependent on the local void fraction at the valve during closure. Good agreement has been obtained between prediction and experimental data by Akagawa et al (1982).

scholarly journals Controlled Generation of Vapor/Liquid Slug Flows by Local Boiling in Microgravity

AIAA Journal ◽  
2020 ◽  
Vol 58 (9) ◽  
pp. 4017-4027
Author(s):  
Pau Bitlloch ◽  
Xavier Ruiz ◽  
Laureano Ramírez-Piscina ◽  
Jaume Casademunt
Keyword(s):  
Liquid Slug ◽  
Slug Flows ◽  
Vapor Liquid

A Comprehensive Analysis on Gas-liquid Slug Flows in Horizontal Pipes

2013 ◽  
Author(s):  
Cristiane Cozin ◽  
Daniel R Pipa ◽  
Fausto Arinos Barbuto ◽  
Rigoberto Em Morales ◽  
Marco Jose da Silva
Keyword(s):  
Comprehensive Analysis ◽  
Liquid Slug ◽  
Horizontal Pipes ◽  
Slug Flows

Influence of Hydrate-Like Solid Particles in Horizontal Gas-Liquid Slug Flows

2017 ◽  
Author(s):  
Luis Miguel Marcos Rosas ◽  
Carlos Lange Bassani ◽  
Fábio Schneider ◽  
Marco Jose Da Silva ◽  
Moisés Marcelino Neto ◽  
...  
Keyword(s):  
Solid Particles ◽  
Liquid Slug ◽  
Slug Flows

Numerical Studies on Non-Boiling Two-Phase Flows in Microtubes and Microchannels: A Review

2010 ◽  
Author(s):  
V. Talimi ◽  
Y. S. Muzychka
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Flow Pattern ◽  
Research Literature ◽  
Heat Transfer Characteristics ◽  
Liquid Slug ◽  
Two Phase Flows ◽  
Two Phase ◽  
Numerical Studies ◽  
Slug Flows

Numerical studies on the hydrodynamic and heat transfer characteristics of two-phase flows in small tubes and channels are reviewed. These flows are gas-liquid and liquid-liquid slug flows. The review is categorized into two groups of studies: circular and non-circular channels. Different aspects such as slug formation, slug shape, flow pattern, pressure drop and heat transfer are of interest. According to this review, there are some large gaps in the research literature, including pressure drop and heat transfer in liquid-liquid slug flows. Gaps in research are also found in applications of non-circular ducts, pressure drop and heat transfer in meandering microtubes and microchannels for both of gas-liquid and liquid-liquid two-phase flows.

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