Magneto-hydrodynamics of bubbly flow in horizontal pipe: New criteria through numerical simulation

2018 ◽  
Author(s):  
Hasanain A. Abdul Wahhab ◽  
A. Rashid A. Aziz ◽  
Hussain H. Al-Kayiem ◽  
Mohammad S. Nasif ◽  
Mohammed El-Adawy
Keyword(s):  
Numerical Simulation ◽  
Bubbly Flow ◽  
Horizontal Pipe ◽  
New Criteria

scholarly journals Study on bubble-induced turbulence in pipes and containers with Reynolds-stress models

2022 ◽  
Author(s):  
Yixiang Liao ◽  
Tian Ma
Keyword(s):  
Numerical Simulation ◽  
Reynolds Stress ◽  
Large Scale ◽  
Bubbly Flow ◽  
Reynolds Stress Model ◽  
Viscosity Models ◽  
Stress Components ◽  
Specific Source ◽  
Stress Models ◽  
Made In

AbstractBubbly flow still represents a challenge for large-scale numerical simulation. Among many others, the understanding and modelling of bubble-induced turbulence (BIT) are far from being satisfactory even though continuous efforts have been made. In particular, the buoyancy of the bubbles generally introduces turbulence anisotropy in the flow, which cannot be captured by the standard eddy viscosity models with specific source terms representing BIT. Recently, on the basis of bubble-resolving direct numerical simulation data, a new Reynolds-stress model considering BIT was developed by Ma et al. (J Fluid Mech, 883: A9 (2020)) within the Euler—Euler framework. The objective of the present work is to assess this model and compare its performance with other standard Reynolds-stress models using a systematic test strategy. We select the experimental data in the BIT-dominated range and find that the new model leads to major improvements in the prediction of full Reynolds-stress components.

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.

scholarly journals Numerical Simulation of Poly-Dispersed Bubbly Flow Using a Multi-Fluid Model

2007 ◽  
Vol 2 (2) ◽  
pp. 502-512 ◽  
Author(s):  
Munenori MAEKAWA ◽  
Naoki SHIMADA ◽  
Akira SOU ◽  
Akio TOMIYAMA
Keyword(s):  
Numerical Simulation ◽  
Fluid Model ◽  
Bubbly Flow

SPRITE MRI of bubbly flow in a horizontal pipe

2009 ◽  
Vol 199 (2) ◽  
pp. 126-135 ◽  
Author(s):  
Mark Sankey ◽  
Zhi Yang ◽  
Lynn Gladden ◽  
Michael L. Johns ◽  
Derek Lister ◽  
...  
Keyword(s):  
Bubbly Flow ◽  
Horizontal Pipe
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