Numerical Simulations of Liquid−Liquid Flows in Microchannels

2010 ◽  
Vol 49 (21) ◽  
pp. 10606-10614 ◽  
Author(s):  
Richa Raj ◽  
Nikita Mathur ◽  
Vivek V. Buwa
Keyword(s):  
Numerical Simulations ◽  
Liquid Flows

COMPARISON OF NUMERICAL SIMULATIONS WITH EXPERIMENTAL DATA FOR VERTICAL ANNULAR AND CHURN GAS-LIQUID FLOWS

2020 ◽  
Author(s):  
Larissa Steiger de Freitas ◽  
Marcus Vinícius Canhoto Alves ◽  
Rafael Rodrigues Francisco
Keyword(s):  
Experimental Data ◽  
Numerical Simulations ◽  
Liquid Flows

Numerical Simulations of Droplets on the Hydrophobic and Hydrophilic Walls by Lattice Boltzmann Method

2011 ◽  
Author(s):  
Yosuke Matsukuma ◽  
Gen Inoue ◽  
Masaki Minemoto
Keyword(s):  
Porous Structure ◽  
Numerical Simulations ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Complex Geometry ◽  
Packed Bed ◽  
Wall Friction ◽  
Porous Structures ◽  
Liquid Flows ◽  
Boltzmann Method

Gas-liquid flows in/on porous structures are simulated by using of the two-phase Lattice Boltzmann method (LBM), in which the wetting boundary conditions on solid wall with complex geometry are incorporated. The complex geometry simulating the packed bed is numerically constructed by the discrete element method (DEM). It is confirmed that structure of the simulated packed bed is similar to the actual bed by comparison of wall friction factor. Next the behaviors of droplet on the porous structures are simulated with different wetting properties. For hydrophilic cases, the droplets set on the porous structure at initial stage penetrated into the porous structure as time marching on and spread in the bed. It was shown that the droplet behavior depends on the surface tension and its viscosity. From these numerical simulations, the applicability of LBM to Gas-liquid flows in/on porous structures was confirmed.

Numerical simulations of fully developed turbulent liquid flows in micro tubes

2001 ◽  
Vol 11 (3) ◽  
pp. 175-180 ◽  
Author(s):  
D Xu ◽  
T Y Ng ◽  
L S Pan ◽  
K Y Lam ◽  
Hua Li
Keyword(s):  
Numerical Simulations ◽  
Liquid Flows

Development of a Lagrangian-Lagrangian Coupling Method in Solid-Liquid Flows Involving Free Surface

2011 ◽  
Author(s):  
Y. Yamada ◽  
M. Sakai ◽  
S. Mizutani ◽  
S. Koshizuka ◽  
T. Nonoue ◽  
...  
Keyword(s):  
Free Surface ◽  
Numerical Simulations ◽  
Multiphase Flows ◽  
Industrial Area ◽  
High Viscosity ◽  
Coupling Method ◽  
Complex Flows ◽  
Numerical Studies ◽  
Liquid Flows ◽  
Solid Liquid

In the industrial area, handling solid-liquid multiphase flows involving free surface is one of the most important problems. However, numerical studies on these complex flows have not been done so far. In this study, we develop a new method to simulate the solid-liquid flows with high viscosity. Lagrangian approaches were employed in the liquid and solid coupling method. Numerical simulations were performed to show the adequacy of this model.

Numerical Simulation of Dispersed Gas/Liquid Flows in Bubble Columns at High Phase Fractions using OpenFOAM®. Part II - Numerical Simulations and Results

2011 ◽  
Vol 34 (8) ◽  
pp. 1321-1327 ◽  
Author(s):  
H. Marschall ◽  
R. Mornhinweg ◽  
A. Kossmann ◽  
S. Oberhauser ◽  
K. Langbein ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Numerical Simulations ◽  
Bubble Columns ◽  
Liquid Flows ◽  
High Phase

Numerical Simulation of Stratified Two-Phase Flow in a Nearly Horizontal Gas-Liquid Pipeline With a Leak

2014 ◽  
Author(s):  
David E. G. P. Bueno ◽  
Aline B. Figueiredo ◽  
Renan M. Baptista ◽  
Felipe B. F. Rachid ◽  
Gustavo C. R. Bodstein
Keyword(s):  
Numerical Simulations ◽  
Two Phase Flow ◽  
Fluid Model ◽  
Mass Conservation ◽  
Phase Flow ◽  
Pressure Gradients ◽  
Two Phase ◽  
Flux Corrected Transport ◽  
Two Fluid Model ◽  
Liquid Flows

The capability of producing accurate numerical simulations of transient gas-liquid flows in gas pipelines has long been a serious concern in the oil industry. In this paper we are particularly interested in simulating this type of flow during the occurrence of a leak in the pipe. We use the flux-corrected transport (FCT) finite-difference method, which is second-order in space, to solve a one-dimensional single-pressure four-equation two-fluid model. We consider this two-phase flow to occur in a nearly horizontal pipeline characterized by the stratified-flow pattern, and we assume that the flow is isothermal with a compressible gas phase and an incompressible liquid phase. We model the leak as a source term in the mass conservation equations. The results of the numerical simulations allow the model sensitivity to be studied by changing the leak diameter and the leak location. From this analysis, we may observe how these parameters affect the pressure gradients along the pipeline that develop upstream and downstream of the leak.

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