Phase and velocity distributions in vertically upward high-viscosity two-phase flow

Schmidt, Jürgen; Giesbrecht, Hartmut; Geld, van der Cwm Cees

doi:10.1016/j.ijmultiphaseflow.2007.10.013

Cited by 61 publications

(63 citation statements)

References 17 publications

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“…Taitel et al [11] developed models for predicting flow pattern transitions for two-phase flow in vertical tubes, based on the mechanism suggested for each transition. Further experiments conducted to define two-phase flow patterns in vertical tubes [12][13] confirmed the applicability of previous definitions, i.e. four basic flow patterns, for different operating conditions.…”

Section: Introductionsupporting

confidence: 59%

An experimental investigation on the effect of middle length and inclination angle of S-shaped channel on two-phase flow patterns

Azadi

Gheisari

Ansari

2014

Experimental Thermal and Fluid Science

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An experimental investigation is conducted to study the effect of middle length and inclination angle of an S-shaped channel on adiabatic two-phase flow patterns. To study this effect, three channel lengths of 0.25, 0.50, and 1.00 m, and four bends at the angles of 22.5˚, 45˚, A dimensionless analysis of obtained flow pattern maps is also carried out. It is shown that effect of geometry changes along S-shaped pipeline on two-phase flow pattern transitions is determined by either inclination angle or elevation difference between two horizontal lines. The explained flow mechanisms, obtained flow pattern maps and the transition lines can be used to predict the particular flow pattern that will be established for a given mass flux, inclined length and angle along pipelines.

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Section: Introductionsupporting

confidence: 59%

An experimental investigation on the effect of middle length and inclination angle of S-shaped channel on two-phase flow patterns

Azadi

Gheisari

Ansari

2014

Experimental Thermal and Fluid Science

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“…Schmidt et al [25] performed high-viscosity two-phase flow experiments in a vertical upward pipe. Their experimental data are not used in the development of the proposed model parameters, which are A and B in Equation (4).…”

Section: Validation Of the New Proposed Modelmentioning

confidence: 99%

“…Figure 5 shows the liquid holdup predictions of both the proposed model and the linear model, which showed the smallest mean absolute error for the test of comparative models. In Figure 5 and Table 5, "Linear fitting" denotes that the drift-flux parameters, the distribution parameter (C 0 ) and drift velocity (u D ), are taken from a linear fitting of the other experimental data, while "Linear Fitting (Schmidt et al, 2008)" uses the drift-flux parameters taken from a linear fitting of Schmidt et al [25] data. It is reasonable that the latter gives better result than the former because of its high dependence on the data used in the regression analysis.…”

Section: Validation Of the New Proposed Modelmentioning

confidence: 99%

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An Efficient Drift-Flux Closure Relationship to Estimate Liquid Holdups of Gas-Liquid Two-Phase Flow in Pipes

et al. 2012

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The reliable predictions of liquid holdup and pressure drop are essential for pipeline design in oil and gas industry. In this study, the drift-flux approach is utilized to calculate liquid holdups. This approach has been widely used in formulation of the basic equations for multiphase flow in pipelines. Most of the drift-flux models have been developed on an empirical basis from the experimental data. Even though, previous studies showed that these models can be applied to different flow pattern and pipe inclination, when the distribution parameter is flow pattern dependent. They are limited to a set of fluid properties, pipe geometries and operational conditions. The objective of this study is to develop a new drift-flux closure relationship for prediction of liquid holdups in pipes that can be easily applied to a wide range of flow conditions. The developed correlation is compared with nine available correlations from literatures, and validated using the TUFFP (Fluid Flow Projects of University of Tulsa) experimental datasets and OLGA (OiL and GAs simulator supplied by SPTgroup) steady-state synthetic data generated by OLGA Multiphase Toolkit. The developed correlation performs better in predicting liquid holdups than the available correlations for a wide range of flow conditions.

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“…To this date a large number of papers (Czernek et al, 2008;Schmidt et al, 2008;Wojtan et al, 2005;Xu, 2007) have been disseminated in description of almost all types of flow structures in multi-phase flow. The research covered in these papers includes issues pertaining to identification and description of forming flow structures, areas of their occurrence (flow maps), determination of pressure drops and volume fractions of specific components of a mixture as well as thickness of fluid films and characteristics of their wavy structures -all of which are standard issues put forward in the description of hydrodynamics of two-phase gas-liquid stream.…”

Section: Introductionmentioning

confidence: 99%

Non-Invasive Evaluation of Wavy Liquid Film

Czernek¹,

Witczak²

2013

Chemical and Process Engineering

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Phase and velocity distributions in vertically upward high-viscosity two-phase flow

Cited by 61 publications

References 17 publications

An experimental investigation on the effect of middle length and inclination angle of S-shaped channel on two-phase flow patterns

An experimental investigation on the effect of middle length and inclination angle of S-shaped channel on two-phase flow patterns

An Efficient Drift-Flux Closure Relationship to Estimate Liquid Holdups of Gas-Liquid Two-Phase Flow in Pipes

Non-Invasive Evaluation of Wavy Liquid Film

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