Experimental and Computational Multiphase Flow
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A visualized study of bubble breakup in small rectangular Venturi channels
Experimental and Computational Multiphase Flow - Tập 1 - Trang 177-185 - 2019
Venturi channels taken as bubble generators own merits of simplicity in structure, high efficiency, and high reliability. A visualized investigation was carried out on bubble transportation and breakup in two small rectangular Venturi channels with the throat sizes of 1 mm × 1 mm and 1 mm × 2 mm, respectively. Experiments were conducted under ambient conditions with air and water as the working fl...... hiện toàn bộ
One-dimensional drift-flux correlations for two-phase flow in medium-size channelsAbstract The drift-flux parameters such as distribution parameter and drift velocity are critical parameters in the one-dimensional two-fluid model used in nuclear thermal-hydraulic system analysis codes. These parameters affect the drag force acting on the gas phase. The accurate prediction of the drift-flux parameters is indispensable to the accurate prediction of... ... hiện toàn bộ
Experimental and Computational Multiphase Flow - Tập 1 Số 2 - Trang 85-100 - 2019
Research on the viscosity of stabilized emulsions in different pipe diameters using pressure drop and phase inversion
Experimental and Computational Multiphase Flow - Tập 4 - Trang 241-263 - 2021
This paper reports experimental research on the flow behavior of oil-water surfactant stabilized emulsions in different pipe diameters along with theoretical and computational fluid dynamics (CFD) modeling of the relative viscosity and inversion properties. The pipe flow of emulsions was studied in turbulent and laminar conditions in four pipe diameters (16, 32, 60, and 90 mm) at different mixture...... hiện toàn bộ
Computational modeling of fiber transport in human respiratory airways—A review
Experimental and Computational Multiphase Flow - Tập 3 - Trang 1-20 - 2020
Investigations on the respiratory transport and deposition of airborne asbestos, man-made vitreous fibers (MMVFs), and carbon nanofiber/carbon nanotubes have been actively conducted in the past few decades. The elongated particles’ distinctive needle-like geometry has been identified as the main cause of extreme carcinogenicity when compared to inhaled spherical particles. Consequently, uncovering...... hiện toàn bộ
Fundamental study on chaotic transition of two-phase flow regime and free surface instability in gas deaeration process
Experimental and Computational Multiphase Flow - Tập 3 - Trang 258-288 - 2020
Deaeration is a process of eliminating aspirated air from liquid in hydraulic reservoirs to avoid cavitation in the downstream pump blades. The complex fluid dynamics associated with deaeration is investigated. The three-dimensional buoyancy driven chaotic behavior of gas-liquid interfacial two-phase flow is studied. Parametric study is executed to understand change in internal flow physics (bubbl...... hiện toàn bộ
Identifying the intermittent flow sub-regimes using pressure drop time series fluctuations
Experimental and Computational Multiphase Flow - - 2023
From a literature survey, a deficiency has been noticed in objective methods to identify and distinct between the intermittent flow sub-regimes. Thus, the aim of this study is to analyze pressure drop fluctuations using statistical methods in order to propose simple tools to characterize the sub-regimes of the intermittent flow. The pressure drop time series were collected from experiments carried...... hiện toàn bộ
Analysis of two-phase flow in the porous medium through a rectangular curved duct
Experimental and Computational Multiphase Flow - - 2023
The current work is primarily concerned with the analysis of an unsteady incompressible laminar two-phase flow in a porous medium through a rectangular curved duct. The Navier–Stokes equations and the level set equation with boundary conditions represent the corresponding governing equations. Fluid flow through curved rectangular ducts is influenced by the centrifugal action arising from duct curv...... hiện toàn bộ
A conservative level set method for liquid-gas flows with application in liquid jet atomisation
Experimental and Computational Multiphase Flow - Tập 5 - Trang 67-83 - 2021
In this paper, a methodology for modelling two-phase flows based on a conservative level set method in the framework of finite volume method is presented. The novelty of the interface capturing method used here lies on the advection of level set which is solved with a WENO scheme and corrected with a novel re-initialisation method for retaining its signed distance function character. The coupling ...... hiện toàn bộ
Numerical study on characteristics of single droplet impacting on wetted surface
Experimental and Computational Multiphase Flow - Tập 3 - Trang 59-67 - 2020
In this paper, the mathematical and physical models of the single droplet impacting on liquid film are established. The axisymmetric numerical simulation of the single droplet impacting on liquid film is carried out by using the Couple Level-set and VOF (Volume of Fluid) numerical simulation method, which is verified by experiment, studying the influence of the liquid film thickness, surface tensi...... hiện toàn bộ
Computational fluid dynamic analysis for investigating the influence of pipe curvature on erosion rate prediction during crude oil production
Experimental and Computational Multiphase Flow - Tập 2 - Trang 255-272 - 2020
The flow dynamics in pipes is a very complex system because it is largely affected by flow conditions. The transport of crude oil in pipelines within unconsolidated petroleum reservoirs is associated with presence of solid particles. These particles are often transported as dispersed phases during crude oil production and are therefore detrimental to the pipe surface integrity. This could lead to ...... hiện toàn bộ
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