One-equation model for quasi-two-dimensional turbulent magnetohydrodynamic flows

2007 ◽  
Vol 19 (7) ◽  
pp. 078101 ◽  
Author(s):  
S. Smolentsev ◽  
R. Moreau
Keyword(s):  
Equation Model ◽  
Two Dimensional ◽  
Magnetohydrodynamic Flows

Two Dimensional Hydro Dynamic and Thermal Modeling of a Turbulent Two Phase Stratified Gas-Liquid Pipe Flow

2009 ◽  
Author(s):  
Z. Mansoori ◽  
Z. Tayarani Yoosefabadi ◽  
M. Saffar-Avval ◽  
F. Behzad ◽  
G. Ahmadi
Keyword(s):  
Pipe Wall ◽  
Interfacial Shear Stress ◽  
Equation Model ◽  
Accurate Solution ◽  
Two Dimensional ◽  
Two Phase ◽  
Perfect Agreement ◽  
High Reynolds ◽  
Gas Liquid Flow ◽  
Energy Equations

A numerical model for solving a fully developed, turbulent, smooth stratified two-phase gas-liquid flow in pipeline is developed. This model is capable to determine pressure drop and liquid height. In addition wall and interfacial shear stress, flow field and temperature field for both phases could be predicted successfully. The method solves the two dimensional momentum and energy equations for both phases and accounts for the effects of turbulence through the use of high Reynolds k – ε two-equation model of turbulence. The bipolar coordinate system is aided to fit the pipe wall and the interface. Also, grid refinement near the interface and near the pipe wall was used for accurate solution near the boundaries. The predicted data by this method is compared with some available Experimental data as well as one and two dimensional modeling results. It is concluded that a perfect agreement between this model and experimental results could be achieved and the ability of this model for prediction of data is more acceptable than one and some two dimensional models. In conclusion this model could have important application for optimization of transportation rates and estimation of corrosion in pipeline.

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