Mechanistic modeling of gas-liquid two-phase flow in pipes pdf

Intermittent type twophase flow alternate plugs of liq. Buy mechanistic modeling of gas liquid two phase flow in pipes papcdr by shoham, ovadia isbn. Twophase gasliquidsolid flow modelling in 90 bends and. Mechanistic modeling of critical sand deposition velocity in gasliquid stratified flow article pdf available in journal of petroleum science and engineering 156 june 2017 with 238 reads. We report the effect of superficial gas and liquid velocities on friction. Evaluation of twophase flow correlations and mechanistic. The possible definitions for the viscosity of twophase gasliquid flow m can be divided into two. The driftflux models represent multiphase flow in wellbores or pipes in terms of a number of empirically determined parameters. Expressions for bubble rise velocity, liquid film velocity, liquid holdup around the taylor bubble, and liquid slug void fraction are derived from the relationships between the twophase velocities. Mechanistic modeling of gasliquid twophase flow in pipes by.

Twophase pipe flow is a common occurrence in many industrial applications such as power generation and oil and gas transportation. A comprehensive mechanistic model is formulated to predict flow patterns, pressure drop, and liquid holdup in vertical upward twophase flow. Several different flow patterns can exist under different flow conditions which have significant effects on liquid holdup, pressure gradient and heat transfer. The traditional approach for twophase flow prediction has been the empirical approach, which was based on the development of an empirical correlation from experimental data. Unified model for gasliquid pipe flow via slug dynamics. Nov 18, 2003 a unified hydrodynamic model is developed for predictions of flow pattern transitions, pressure gradient, liquid holdup and slug characteristics in gasliquid pipe flow at all inclination angles from. This book presents the recent approach, in which mathematical mechanistic models are developed, based on the physical phenomena, to predict two phase flow behavior.

Friction pressure drop model of gasliquid twophase flow in. Mechanistic modeling of gas liquid two phase flow in pipes. Pdf comprehensive mechanistic model for 2 phase flow in. Multidimensional analysis of horizontal gasliquid twophase flow 69 7. Testing and application of nphasebased multifield model of gasliquid flows 66 7. Calculation of mass transfer coefficients for corrosion.

Cfd modeling of liquid film reversal of twophase flow in. The driftflux model for twophase gasliquid flow is given by. Classifcation singlephase flow can be classified according to the character. A mechanistic model for predicting surging initiation inside the esp based on the same transition mechanism of flow pattern in gasliquid pipe flow is developed. Mechanistic model for fourphase sandwateroilgas stratified flow in horizontal pipes b. The most prominent aspect of multiphase flow is the variation in the physical distribution of the phases in the flow conduit known as the flow pattern. Mechanistic model for four phase sandwateroil gas stratified flow in horizontal pipes b. Kaya and others published comprehensive mechanistic modeling of twophase flow in deviated wells find, read and cite all the research you need on researchgate.

Experimental study and mechanistic modeling of pressure. A mechanistic model for gasliquid flow in upward vertical annuli. Direct numerical simulations of two phase flow in an inclined pipe volume 825 fangfang xie, xiaoning zheng, michael s. In the homogeneous model, the two phases are assumed to be travelling at the same velocity in the channel and the flow is treated as being analogous to a single phase flow see article on multiphase flow. Pressure variations are inevitable in most two phase. Comprehensive mechanistic modeling of twophase flow in deviated wells.

Oct 27, 2017 the most prominent aspect of multiphase flow is the variation in the physical distribution of the phases in the flow conduit known as the flow pattern. Accurate prediction of liquid holdup and pressure drop is of vast importance to ensure effective design and operation of fluid transport systems. A comprehensive model was formulated to predict flow patterns and the flow characteristics of the predicted flow patterns for upward twophase flow. A mechanistic model of heat transfer for gasliquid flow. Click download or read online button to get mechanistic modeling of gas liquid two phase flow in pipes book now. Two phase flow models comparison and analysis yun zhe liu 3520 2. This paper reports numerical and experimental investigation of strati.

Micro motion coriolis flow and density measurement 3,974 views. A mechanistic model for predicting pressure drop in vertical. The flowpatterntransition model consists of a modified zhang et al. The great advantage of this model is that there is continuity between the various flow regimes.

The xiao model is a comprehensive mechanistic model developed for gasliquid twophase flow in horizontal and near horizontal pipelines. The reynolds averaged navierstokes equations rans with the kx turbulence model for a fully developed strati. Add to bookbag sell this book add to wish list set price alert. Anant joshi manoj singh introduction daily life example carbonated cold drinks raindrops falling through air air fuel mixture in automobile engine water and steam mixture flowing through condenser 3212012 3. Two phase pipe flow is a common occurrence in many industrial applications such as power generation and oil and gas transportation. Edwards, methodology for sizing relief valves for twophase gasliquid flow, proceedings of the process plant. Multiphase flow correlations production technology. Oluyemi school of engineering, robert gordon university, uk abstract understanding the physics of multiphase flow as one of the most dominant flow regimes is posing many challenges to researchers in the field of fluid dynamics. A wide range of models have been developed for twophase flow systems.

Based on measured void fraction data, the proposed liquid slug void. Liquidliquid twophase flow systems neimabrauner school of engineering, telaviv university telaviv 69978, israel 1 generaldescriptionofliquidliquidflows. Mechanistic modeling of gasliquid twophase flow in pipes ovadia shoham. Twophase flow is encountered in a wide range of engineering applications. Pdf mechanistic modeling of critical sand deposition. The liquid and gas are presumed to be uniformly mixed due to the homogeneous flow. New model of turbuleentdispersioninduced force 19 3. Mechanistic modeling of gasliquid twophase 4ow in pipes. Dec 18, 2008 bubble flow, slug flow and emptyfullempty flow in fluid applications duration. Modeling of liquid entrainment in gas in horizontal pipes. Chapter 1 multiphase flow fundamentals prior to embarking on the investigation of multiphase. Studies were made on the effect of the mean gas and liquid flow rate, pipe diameter, and pipe orientation on k a, the mean liquid. Chapter 1 multiphase flow fundamentals pdf free download.

A wide range of models have been developed for two phase flow systems. A mechanistic model for predicting pressure drop in. In this paper, the pressure surging phenomenon in esps is studied through experimental measurements and mechanistic modeling. This book presents the recent approach, in which mathematical mechanistic models are developed, based on the physical phenomena, for the prediction of twophase flow behavior. Surging tests accounting for the effects of intake pressure, gvfs, and gasliquid flow rates on esp boosting pressure under twophase flow conditions are conducted.

In this paper, a twophase flow experiment in inclined pipe was performed. The comprehensive mechanistic model is composed of a model for flow pattern prediction and a set of independent models for predicting holdup and pressure drop in bubble, slug, and annular flows. Jul 01, 2000 this work proposes a mechanistic model for predicting the flow behavior for upward vertical and inclined two phase slug flow. Pdf mechanistic modeling of twophase flow in deviated wells. A comprehensive mechanistic model for twophase flow in pipelines.

Summary of flow regimes and pressure drop correlations in reduced and partial gravity nasacr2006214085 january 2006 national aeronautics and space administration glenn research center prepared under cooperative agreement ncc3975. By use of the classical twofluid and homogeneous modeling methodologies stemming from oilwater two phase flow in conventional pipes, combined with the simplified classification, a mechanistic. A new mechanistic model for gasliquid twophase flow with mass transfer through the pipe wall, which accounts for the effects of wall inflow or outflow on wall friction, acceleration and flow pattern transition, has been developed. Development of mechanistic models of twophase flows for the. Direct numerical simulations of twophase flow in an inclined. This work proposes a mechanistic model for predicting the flow behavior for upward vertical and inclined twophase slug flow. Summary in this study, a mechanistic model is developed to predict flow patterns, pressure gradient, and liquid holdup for gasliquid flow in upward vertical annuli.

It has been evaluated against a data bank that includes field data culled from the a. Flowpatterns flows of two immiscible liquids are encountered in a diverse range of processes and. Unified model for gasliquid pipe flow via slug dynamicspart. Twophase gasliquid solid flow modelling in 90 bends and its effect on erosion by m. The major advantage of this model compared with previous mechanistic models is that it is developed based on the. Experimental characterization of vertical gasliquid pipe. Triantafyllou, yiannis constantinides, yao zheng, george em karniadakis. Direct numerical simulations of twophase flow in an. A heattransfer model for gasliquid flow in vertical annuli is developed in conjunction with the mechanistic hydrodynamic model of yin et al. Mechanistic modeling of gasliquid twophase flow in pipes 9781555631079. Modelling of stratified gas liquid twophase flow in horizontal. Development of mechanistic models of twophase flows for. The expressions available for the twophase gasliquid viscosity are mostly of an empirical nature as a function of mass quality x.

This book presents the recent approach, in which mathematical mechanistic models are developed, based on the physical phenomena, to predict twophase flow behavior. When gas and liquid flow simultaneously in a pipe, the two phases can. Abstract a new comprehensive mechanistic model is developed to predict flow pattern and flow characteristics such as pressure drop and liquid holdup in vertical and deviated wells. This study introduces a methodology for the estimation of mass transfer rates in gasliquid flow based on the chiltoncolburn analogy, eddy. A mechanistic model for vertical and inclined twophase. A mechanistic model for vertical and inclined twophase slug flow. For instance, in the petroleum industry, the common problems associated with gasliquid twophase flow include calculation of flow rate, pressure loss, and liquid holdupvoid fraction in the pipeline.

The xiao model is a comprehensive mechanistic model developed for gas liquid two phase flow in horizontal and near horizontal pipelines. Twophase flow models comparison and analysis yun zhe liu 3520 2. A mechanistic model of heat transfer for gasliquid flow in. Bubble flow, slug flow and emptyfullempty flow in fluid applications duration. In the homogeneous model, the two phases are assumed to be travelling at the same velocity in the channel and the flow is treated as being analogous to a single phase flow see article on multiphase flow separated flow models. Gasliquid twophase flow in an annulus can be found in a. Computational methods for multiphase flow andrea prosperetti. Direct numerical simulations of twophase flow in an inclined pipe volume 825 fangfang xie, xiaoning zheng, michael s. Pdf comprehensive mechanistic modeling of twophase flow in. As a result, very few studies have been recently emerged in modeling the annular twophase flow using cfd techniques such as the 3d work done by karami et al. This book presents the recent approach, in which mathematical mechanistic models are developed, based on the physical phenomena, for the prediction of two phase flow behavior.

Comparison of twophase pipe flow in openfoam with a. The traditional approach for two phase flow prediction was based on the development of an empirical correlation from experimental data. Khalaiji oskouei t arbiat modares university abstract sand particles present in the fluid flows extracted from oil wells causes many problems for oil and gas production companies. Buy mechanistic modeling of gasliquid twophase flow in pipes papcdr by shoham, ovadia isbn. Friction pressure drop model of gasliquid twophase flow in an. Gasliquid twophase flow can be found in petroleum, chemistry, nuclear power, aerospace and other industries xue et al. The possible definitions for the viscosity of two phase gas liquid flow m can be divided into two. The traditional approach for twophase flow prediction was based on the development of an empirical correlation from experimental data. The expressions available for the two phase gas liquid viscosity are mostly of an empirical nature as a function of mass quality x. As a result, very few studies have been recently emerged in modeling the annular two phase flow using cfd techniques such as the 3d work done by karami et al. Friction pressure drop model of gasliquid twophase flow.

This study introduces a methodology for the estimation of mass transfer rates in gas liquid flow based on the chiltoncolburn analogy, eddy diffusivity, and mechanistic gas liquid flow modeling. By use of the classical twofluid and homogeneous modeling methodologies stemming from oilwater twophase flow in conventional pipes, combined with the. A mechanistic model of heat transfer for gasliquid. The driftflux model for two phase gas liquid flow is given by. Search by multiple isbn, single isbn, title, author, etc.

Mechanistic modeling of gasliquid twophase flow in pipes. Pdf comprehensive mechanistic modeling of twophase flow. The traditional approach for two phase flow prediction has been the empirical approach, which was based on the development of an empirical correlation from experimental data. Relief valves for twophase gasliquid flow, chemical engineering, 109, no. Interfacial forces in horizontal gasliquid twophase flows 23 4. A mechanistic model for gasliquid flow in upward vertical. A unified hydrodynamic model is developed for predictions of flow pattern transitions, pressure gradient, liquid holdup and slug characteristics in gasliquid pipe flow at all inclination angles from.