scholarly journals INVESTIGATION OF TWO PHASE FLOW MOTION WITH SMALL-SIZE GAS BUBBLES

2019 ◽  
Vol 16 (2) ◽  
pp. 48-54
Author(s):  
I.M. Vasenin ◽  
Keyword(s):  
Two Phase Flow ◽  
Gas Bubbles ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Motion

From disturbance to measurement: Application of Coriolis meter for two-phase flow with gas bubbles

2021 ◽  
Vol 79 ◽  
pp. 101892
Author(s):  
Hao Zhu ◽  
Alfred Rieder ◽  
Wolfgang Drahm ◽  
Yaoying Lin ◽  
Andreas Guettler ◽  
...  
Keyword(s):  
Two Phase Flow ◽  
Gas Bubbles ◽  
Phase Flow ◽  
Two Phase

Understanding the self-sustained oscillating two-phase flow motion in a closed loop pulsating heat pipe

Energy ◽  
2015 ◽  
Vol 90 ◽  
pp. 889-899 ◽  
Author(s):  
Giulia Spinato ◽  
Navid Borhani ◽  
John R. Thome
Keyword(s):  
Heat Pipe ◽  
Closed Loop ◽  
Two Phase Flow ◽  
The Self ◽  
Phase Flow ◽  
Pulsating Heat Pipe ◽  
Two Phase ◽  
Flow Motion

The effect of interfacial mass transfer of slip-rising gas bubbles on two-phase flow in the vertical wellbore/pipeline

2020 ◽  
Vol 150 ◽  
pp. 119326 ◽  
Author(s):  
Hongwei Yang ◽  
Jun Li ◽  
Gonghui Liu ◽  
Xing Xing ◽  
Hailong Jiang ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Two Phase Flow ◽  
Gas Bubbles ◽  
Phase Flow ◽  
Two Phase ◽  
Interfacial Mass Transfer

scholarly journals A 3D Numerical Model for Turbidity Currents

2020 ◽  
Vol 15 ◽  
Keyword(s):  
Numerical Model ◽  
Two Phase Flow ◽  
Curvilinear Coordinates ◽  
Turbidity Currents ◽  
Phase Flow ◽  
High Concentration ◽  
Two Phase ◽  
Motion Equations ◽  
Vertical Coordinate ◽  
Flow Motion

A numerical model that solves two-phase flow motion equations to reproduce turbidity currents that occur in reservoirs, is proposed. Three formalizations of the two-phase flow motion equations are presented: the first one can be adopted for high concentration values; the second one is valid under the hypothesis of diluted concentrations; the third one is based on the assumption that the particles are in translational equilibrium with the fluid flow. The proposed numerical model solves the latter formalization of two-phase flow motion equations, in order to simulate turbidity currents. The motion equations are presented in an integral form in time-dependent curvilinear coordinates, with the vertical coordinate that varies in order to follow the free surface movements. The proposed numerical model is validated against experimental data and is applied to a practical engineering case study of a reservoir, in order to evaluate the possibility of the formation of turbidity currents.

scholarly journals Modeling Two-Phase Flow With Offshore Applications

2005 ◽  
Author(s):  
Rik Wemmenhove ◽  
Erwin Loots ◽  
Roel Luppes ◽  
Arthur E. P. Veldman
Keyword(s):  
Numerical Model ◽  
Gas Phase ◽  
Flow Model ◽  
Two Phase Flow ◽  
Gas Bubbles ◽  
Phase Model ◽  
Green Water ◽  
Phase Flow ◽  
Complex Flow ◽  
Two Phase

With the trend towards offshore LNG production and offloading, sloshing of LNG in partially filled tanks has become an important research subject for the offshore industry. LNG sloshing may induce impact pressures on the containment system and may affect the motions of the LNG carrier. So far, LNG sloshing has been studied mainly using model experiments with an oscillation tank. However, the development of Navier-Stokes solvers with a detailed handling of the free surface allows the numerical simulation of sloshing. It should be investigated, however, how accurate the results of this type of simulations are for this complex flow problem. The paper first presents the details of the numerical model, an improved Volume Of Fluid (iVOF) method. The program has been developed initially to study the sloshing of liquid fuel in satellites. Later, the numerical model has been used for calculations of green water loading and the analysis of anti-roll tanks, including the coupling with ship motions. Recently, the model has been extended to incorporate two-phase flow. This extension improves its ability to simulate the effect of gas bubbles of different sizes. Gas bubbles are present in virtually all relevant offshore situations; not only at LNG sloshing but also during green water events, bow slamming and water entry. In a two-phase flow model, both the liquid and the gas phase can have their own continuity and momentum equations. The handling of the compressibility of the gas phase is a major issue in the design of a two-phase flow model. However, as a first step in the modeling process, the gas phase is considered as incompressible. For a dambreak experiment, results of the one-phase model, the incompressible two-phase model and model experiment results have been compared. It is shown that the physics are more accurately simulated with the incompressible two-phase model. Furthermore, the paper will show results of the incompressible model for LNG sloshing. The physics of LNG sloshing and several other applications can be approached better by taking the compressibility into account. Therefore, as a second step, a compressible model is currently under construction, involving adiabatic compression of the gas phase.

scholarly journals Heat and mass transfer in two-phase flow motion in minichannel under variable heating

2014 ◽  
Vol 19 ◽  
pp. 01010 ◽  
Author(s):  
Evgenii S. Chachilo ◽  
Michael N. Grehov ◽  
Dmitrii V. Feoktistov
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Motion

scholarly journals The Collapsing of Gas Bubbles in the Bio tissues between Two-Phase Flow and its applications under the effect of Suction Process

2017 ◽  
Vol 38 (1) ◽  
pp. 27-32
Author(s):  
S. A. Mohammadein ◽  
A. A. Megahed ◽  
Asmaa .H. A. Elhabashi
Keyword(s):  
Two Phase Flow ◽  
Gas Bubbles ◽  
Phase Flow ◽  
Two Phase
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