THE EFFECTS OF PIPE LENGTH ON COUNTER-CURRENT AIR-WATER TWO-PHASE FLOW IN INCLINED PIPES(Multiphase Flow)

2005 ◽  
Vol 2005 (0) ◽  
pp. 223-228
Author(s):  
DEENDARLIANTO ◽  
Akiharu OUSAKA ◽  
Akira KARIYASAKI ◽  
Tohru FUKANO
Keyword(s):  
Multiphase Flow ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Pipe Length ◽  
Inclined Pipes ◽  
Counter Current

Prediction of flooding gas velocity in gas–liquid counter-current two-phase flow in inclined pipes

2006 ◽  
Vol 236 (12) ◽  
pp. 1282-1292 ◽  
Author(s):  
Akiharu Ousaka ◽  
Deendarlianto ◽  
Akira Kariyasaki ◽  
Tohru Fukano
Keyword(s):  
Two Phase Flow ◽  
Phase Flow ◽  
Gas Velocity ◽  
Two Phase ◽  
Inclined Pipes ◽  
Counter Current

scholarly journals A relaxation scheme for a hyperbolic multiphase flow model

2019 ◽  
Vol 53 (5) ◽  
pp. 1763-1795 ◽  
Author(s):  
Khaled Saleh
Keyword(s):  
Multiphase Flow ◽  
Flow Model ◽  
Two Phase Flow ◽  
Equations Of State ◽  
Energy Inequality ◽  
Approximation Error ◽  
Finite Volume Scheme ◽  
Phase Flow ◽  
Two Phase ◽  
Relaxation Scheme

This article is the first of two in which we develop a relaxation finite volume scheme for the convective part of the multiphase flow models introduced in the series of papers (Hérard, C.R. Math. 354 (2016) 954–959; Hérard, Math. Comput. Modell. 45 (2007) 732–755; Boukili and Hérard, ESAIM: M2AN 53 (2019) 1031–1059). In the present article we focus on barotropic flows where in each phase the pressure is a given function of the density. The case of general equations of state will be the purpose of the second article. We show how it is possible to extend the relaxation scheme designed in Coquel et al. (ESAIM: M2AN 48 (2013) 165–206) for the barotropic Baer–Nunziato two phase flow model to the multiphase flow model with N – where N is arbitrarily large – phases. The obtained scheme inherits the main properties of the relaxation scheme designed for the Baer–Nunziato two phase flow model. It applies to general barotropic equations of state. It is able to cope with arbitrarily small values of the statistical phase fractions. The approximated phase fractions and phase densities are proven to remain positive and a fully discrete energy inequality is also proven under a classical CFL condition. For N = 3, the relaxation scheme is compared with Rusanov’s scheme, which is the only numerical scheme presently available for the three phase flow model (see Boukili and Hérard, ESAIM: M2AN 53 (2019) 1031–1059). For the same level of refinement, the relaxation scheme is shown to be much more accurate than Rusanov’s scheme, and for a given level of approximation error, the relaxation scheme is shown to perform much better in terms of computational cost than Rusanov’s scheme. Moreover, contrary to Rusanov’s scheme which develops strong oscillations when approximating vanishing phase solutions, the numerical results show that the relaxation scheme remains stable in such regimes.

scholarly journals 615 Gas-liquid counter-current two-phase flow in inclined pipe

2008 ◽  
Vol 2008.46 (0) ◽  
pp. 227-228
Author(s):  
Kohei TANAKA ◽  
Akiharu OUSAKA ◽  
Akira KARIYAZAKI. ◽  
Koji KUSANO
Keyword(s):  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Inclined Pipe ◽  
Counter Current

Use of pressure signal analysis to characterise counter-current two-phase flow regimes in annuli

2020 ◽  
Vol 153 ◽  
pp. 547-561 ◽  
Author(s):  
Benjamin Wu ◽  
Ayrton Soares Ribeiro ◽  
Mahshid Firouzi ◽  
Thomas E. Rufford ◽  
Brian Towler
Keyword(s):  
Signal Analysis ◽  
Two Phase Flow ◽  
Flow Regimes ◽  
Phase Flow ◽  
Two Phase ◽  
Pressure Signal ◽  
Counter Current

Two-Phase Flow Correlations as Applied to Pumping Well Testing

1994 ◽  
Vol 116 (2) ◽  
pp. 121-128 ◽  
Author(s):  
C. S. Kabir ◽  
A. R. Hasan
Keyword(s):  
Two Phase Flow ◽  
Laboratory Data ◽  
Objective Evaluation ◽  
Well Testing ◽  
Phase Flow ◽  
Two Phase ◽  
Pipe Length ◽  
Annular Geometry ◽  
Test Computation ◽  
Gas Void Fraction

In a pumping-well buildup test, computation of bottom-hole pressure (BHP) and flow rate (BHF) requires the use of a two-phase flow correlation for estimating the gas void-fraction or holdup along the pipe length and shut-in time. Various correlations are available to perform this task. The purpose of this work is to review these two-phase correlations and to provide an objective evaluation. This analysis is necessitated by the fact that considerable differences in BHP and BHF may occur—depending upon the correlation used—in wells with long pumping liquid columns or those that have high gas/liquid ratio production. Consequently, a potential exists for obtaining different reservoir parameters from transient interpretation. Using laboratory data for two-phase flow in annular geometry, relative strengths of these correlations are explored. Our own data and those of others (a total of 114 points) are used in this comparative study. For static liquid columns, the correlations of Hasan-Kabir, Gilbert, and Podio et al. provide acceptable agreement with experimental data, exceptions being the Godbey-Dimon and Schmidt et al. correlations. In contrast, for the moving liquid column scenario, as in a buildup test, the Hasan-Kabir model provides the best agreement with the dataset used in this work. A basis for smoothing the bubbly/slug transition boundary is given for the Hasan-Kabir method, together with a field example.

The Numerical Simulation of the Water Jet in Hydroentanglement

2011 ◽  
Vol 189-193 ◽  
pp. 2181-2184
Author(s):  
Heng Zhang ◽  
Xiao Ming Qian ◽  
Zhi Min Lu ◽  
Yuan Bai
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Multiphase Flow ◽  
Flow Model ◽  
Two Phase Flow ◽  
Water Jet ◽  
Phase Flow ◽  
Governing Equations ◽  
Two Phase ◽  
Set Up

The functions of hydroentangled nonwovens are determined by the degree of the fiber entanglement, which depend mainly on parameters of the water jet. According to the spun lacing technology, this paper set up the numerical model based on the simplified water jetting model, establishing the governing equations, and the blended two-phase flow as the multiphase flow model. This paper simulation the water needle after the water jetting from the water needle plate in the different pressure (100bar, 60bar, 45bar, 35bar).

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