TWO PHASE GAS-LIQUID FLOWS RECOGNITION USING FUZZY INFERENCE

Comparison of the hyperbolic range of two-fluid models on two-phase gas -liquid flows

In this paper, a numerical study is conducted in order to compare hyperbolic range of equations of isotherm two-fluid model governing on two-phase flow inside of pipe using conservative Shock capturing method. Differential equations of the two-fluid model are presented in two forms (i.e. form I and form II). In forms I and II, pressure correction terms are hydrodynamic and hydrostatic, respecti...

Phase characterization of experimental gas–liquid two-phase flows

Modelling of Gas-Liquid Two-Phase Flows in Vertical Pipes using PHOENICS

The PHOENICS code is employed to perform numerical simulations of gas-liquid two-phase bubbly flows in large vertical flow channels. Air-water and steam-water flows in large diameter pipes are simulated using the built-in two-fluid option of the code where liquid and gas are modeled as two interacting continua. The code is utilized in conjunction with advanced twophase flow models, accounting f...

Visualisation of Two-phase Gas-liquid Pipe Flows Using Electrical Capacitance Tomography

Electrical Capacitance Tomography (ECT) can be used to measure concentration and velocity distributions in two-phase flows. ECT is non-intrusive, and the reconstruction of the concentration and velocity distribution can be undertaken in real time and over an arbitrary number of zones in the flow cross-section. The concept of a ‘virtual instrument’ is introduced where zones of the image can be s...

Modeling and Numerical Aspects of Population Balance Equations in gas/liquid-liquid Two Phase Flows

In this paper, we present numerical techniques for one-way coupling of CFD and Population Balance Equations (PBE) based on the incompressible flow solver FeatFlow which is extended with a) Chien’s Low-Reynolds number k − ε turbulence model [4], b) breakage kernel model of Lehr et al. [34, 35], c) coalescence kernel model of Lehr et al. [34]. The presented implementation ensures a strictly conse...