scholarly journals Numerical Simulation on the Flow Pattern of a Gas–Liquid Two-Phase Swirl Flow

ACS Omega ◽  
2022 ◽  
Author(s):  
Yongchao Rao ◽  
Zehui Liu ◽  
Shuli Wang ◽  
Lijun Li
Keyword(s):  
Numerical Simulation ◽  
Flow Pattern ◽  
Swirl Flow ◽  
Two Phase

scholarly journals Study on the influence of coconut oil on flow pattern and pressure drop of two-phase swirl flow

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32644-32655
Author(s):  
Shuli Wang ◽  
Boyang Ding ◽  
Yongchao Rao ◽  
Feng Chen
Keyword(s):  
Pressure Drop ◽  
Interfacial Tension ◽  
Flow Pattern ◽  
Coconut Oil ◽  
Swirl Flow ◽  
Two Phase ◽  
Oil Drilling ◽  
Surfactant Systems

In view of the widespread existence of swirl flow in surfactant systems in oil drilling, gas gathering, and gathering pipelines, surfactants can affect interfacial tension and thus change the flow pattern.

Flow pattern and pressure drop of gas-liquid two-phase swirl flow in a horizontal pipe

2019 ◽  
Vol 26 (9) ◽  
pp. 2528-2542
Author(s):  
Yong-chao Rao ◽  
Bo-yang Ding ◽  
Shu-li Wang ◽  
Zi-wen Wang ◽  
Shi-dong Zhou
Keyword(s):  
Pressure Drop ◽  
Flow Pattern ◽  
Swirl Flow ◽  
Two Phase ◽  
Horizontal Pipe

Numerical Simulation as a Tool for Design Optimization of Two-Phase Swirl Flow Atomizers

2021 ◽  
pp. 228-236
Author(s):  
Andżelika Krupińska ◽  
Marek Ochowiak ◽  
Daniel Janecki ◽  
Sylwia Włodarczak ◽  
Magdalena Matuszak
Keyword(s):  
Numerical Simulation ◽  
Design Optimization ◽  
Swirl Flow ◽  
Two Phase

Direct Numerical Simulation of Rotating Stall and Stall Induced in Centrifugal Vaneless Diffusers

2000 ◽  
Author(s):  
Yoshifumi Kinoshita ◽  
Takashi Matsumura
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Flow Pattern ◽  
Incompressible Flow ◽  
Swirl Flow ◽  
Rotating Stall ◽  
Vaneless Diffusers

A direct numerical simulation (DNS) method is proposed to evaluate the general incompressible flow behaviors in the centrifugal vaneless diffusers. This method is then applied to three kinds of centrifugal vaneless diffusers. In this way, it is confirmed that the flow pattern predicted based on the present DNS method agrees with experiments not only under the rotating stall condition but also under the diffuser stall condition. In addition, the predictions for rotating stall limit are shown to agree with the authors’ previously proposed criterion for rotating stall limit. Finally, it is clarified both experimentally and numerically that the authors’ previously proposed criterion for diffuser stall is correct; that is, when the zone of inward swirl flow reaches the exit of the diffuser, diffuser stall begins.

Comparison of experimental data and numerical simulation of two-phase flow pattern in vertical minichannel

2012 ◽  
Vol 33 (1) ◽  
pp. 63-71
Author(s):  
Jarosław Sowiński ◽  
Marek Krawczyk ◽  
Marek Dziubiński
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Boundary Conditions ◽  
Flow Pattern ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Computational Domain ◽  
Two Phase ◽  
Ansys Fluent ◽  
Satisfactory Description

Comparison of experimental data and numerical simulation of two-phase flow pattern in vertical minichannel The aim of the study was the implementation of a numerical simulation of the air-water two-phase flow in the minichannel and comparing results obtained with the values obtained experimentally. To perform the numerical simulations commercial software ANSYS FLUENT 12 was used. The first step of the study was to reproduce the actual research installation as a three-dimensional model with appropriate and possible simplifications - future computational domain. The next step was discretisation of the computational domain and determination of the types of boundary conditions. ANSYS FLUENT 12 has three built-in basic models with which a two-phase flow can be described. However, in this work Volume-of-Fluid (VOF) model was selected as it meets the established requirements of research. Preliminary calculations were performed for a simplified geometry. The calculations were later verified whether or not the simplifications of geometry were chosen correctly and if they affected the calculation. The next stage was validation of the chosen model. After positive verification, a series of calculations was performed, in which the boundary conditions were the same as the starting conditions in laboratory experiments. A satisfactory description of the experimental data accuracy was attained.

Numerical Simulation of the Interfacial Growth of the Stratified Wavy Two-Phase Flow in the Horizontal Rectangular Channel

2004 ◽  
Author(s):  
Ken-ichi Ebihara ◽  
Tadashi Watanabe
Keyword(s):  
Numerical Simulation ◽  
Flow Pattern ◽  
Two Phase Flow ◽  
Rectangular Channel ◽  
Channel Width ◽  
Phase Flow ◽  
Dimensionless Numbers ◽  
Two Phase ◽  
Flow Pattern Map ◽  
Interfacial Growth

Two-phase flow is one of the important phenomena that are found in nuclear reactors. It is required for the design and the safe operation of nuclear reactors to understand and predict the two-phase flow phenomenon by numerical analyses. This paper describes the numerical simulation of the interfacial growth of the stratified wavy two-phase flow in the horizontal rectangular channel. This flow is the cocurrent flow separated by gravity and a fundamental flow pattern of two-phase flow. The influence of the channel width upon the growth of the interfacial wave was evaluated by carrying out several simulations for the different channel width. The numerical simulation model adopted in this paper is a one-component two-phase fluid model of the lattice Boltzmann method. This model has been developed and utilized for numerical analyses of two-phase flow in recent years because it has the capability of simulating spontaneous phenomena of the interface between phases. The wave growth was observed and the dimensionless numbers that characterize the two-phase flow state were measured during the computations. The relation between the wave growth and the dimensionless numbers, which were obtained as the computational results was compared with that in the flow pattern map proposed on the basis of theoretical consideration by Taitel and Dukler. It was verified in the case of the wide channel width that the simulated relation was in agreement with that in the theoretical flow pattern map. It was shown that the narrower the channel width became, the more mass flow rate of the rare phase the interfacial growth needed and the obtained relation deviated from that in the flow pattern map.

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