Numerical Simulation of Two-Fluid Two-Phase Flows by HLL Scheme Using an Approximate Jacobian Matrix

2006 ◽  
Vol 49 (2) ◽  
pp. 155-177 ◽  
Author(s):  
Geum-Su Yeom ◽  
Keun-Shik Chang
Keyword(s):  
Numerical Simulation ◽  
Jacobian Matrix ◽  
Two Phase Flows ◽  
Two Phase ◽  
Approximate Jacobian ◽  
Two Fluid

Dynamics of the Internal Flow in Swirl Atomizers by CFD Simulations

2018 ◽  
pp. 100-132
Author(s):  
Roman Ivanovitch Savonov
Keyword(s):  
Numerical Simulation ◽  
Homogeneous Model ◽  
Internal Flow ◽  
Surface Model ◽  
Cfd Simulations ◽  
Two Phase ◽  
Two Phases ◽  
Swirl Atomizer ◽  
Free Surface Model ◽  
Two Fluid

This work presents the simulation of the internal flow in a swirl atomizer. The geometry of the atomizer is calculated by analytical equations used in engineering. The numerical simulation of the two-phase flow is performed by using two equations k-ε turbulence model. The fluids are presented as two-fluid homogeneous model. The interface between two phases is calculated by free surface model. The distribution fields of the axial and tangential velocities, pressures and air core are obtained. The aim of this work is to compare the results obtained by numerical simulation with ones obtained analytically. Also, to study the internal fluids flow inside the atomizer.

scholarly journals Two-fluid equations for two-phase flows in moving systems

2019 ◽  
Vol 51 (6) ◽  
pp. 1504-1513
Author(s):  
Byoung Jae Kim ◽  
Myung Ho Kim ◽  
Seung Wook Lee ◽  
Kyung Doo Kim
Keyword(s):  
Two Phase Flows ◽  
Two Phase ◽  
Fluid Equations ◽  
Two Fluid

Sharp numerical simulation of incompressible two-phase flows

2019 ◽  
Vol 391 ◽  
pp. 91-118 ◽  
Author(s):  
Maxime Theillard ◽  
Frédéric Gibou ◽  
David Saintillan
Keyword(s):  
Numerical Simulation ◽  
Two Phase Flows ◽  
Two Phase

Numerical simulation for two-phase flows using hybrid scheme

2007 ◽  
Vol 186 (2) ◽  
pp. 980-991 ◽  
Author(s):  
Jun Zhou ◽  
Li Cai ◽  
Jian-Hu Feng ◽  
Wen-Xian Xie
Keyword(s):  
Numerical Simulation ◽  
Hybrid Scheme ◽  
Two Phase Flows ◽  
Two Phase

Experimental Visualization and Numerical Simulation of Liquid-Gas Two-Phase Flows in a Horizontal Pipe

2017 ◽  
Author(s):  
Milad Darzi ◽  
Chanwoo Park
Keyword(s):  
Numerical Simulation ◽  
Gas Flow ◽  
Cfd Simulation ◽  
Glass Tube ◽  
Flow Patterns ◽  
Two Phase Flows ◽  
Two Phase ◽  
Mixture Flow ◽  
Horizontal Pipe ◽  
Flow Rates

This paper presents the results of both visualization experiment and numerical simulation for two-phase (water-air mixture) flows in a horizontal tube. A visualization experimental setup was used to observe various two-phase flow patterns for different flow rates of water/air mixture flow in a glass tube of 12 mm in diameter. Total of 303 experimental data points were compared with Mandhane’s flow map. Most of the data for stratified, plug and slug flows were found to be in good agreement. However, annular flow was observed for relatively lower gas flow rates and also wavy flow occurred at relatively higher liquid flow rates in this experiment. A three-dimensional Computational Fluid Dynamics (CFD) simulation was performed using OpenFOAM employing “interFoam” as the solver to simulate the two-phase flows in horizontal pipe based on Volume-Of-Fluid (VOF) method. The simulated and experimentally observed flow patterns for the same set of superficial velocities shows acceptable similarities for stratified, wavy, plug, slug and annular flows. Also, the computed values of the void fraction and pressure drop for the numerical simulations shows reasonable agreement with well-known correlations in literature.

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