scholarly journals A Two-Fluid Turbulence Model for Gas-Solid Two-Phase Flows.

1997 ◽  
Vol 30 (3) ◽  
pp. 526-534 ◽  
Author(s):  
Yunliang Wang ◽  
Satoru Komori ◽  
Myung Kyoon Chung
Keyword(s):  
Turbulence Model ◽  
Two Phase Flows ◽  
Two Phase ◽  
Fluid Turbulence ◽  
Two Fluid

scholarly journals Mathematical modeling of the kinematics of chemical droplets when pulverizing with a sprayer based on a new two-fluid turbulent model

2021 ◽  
Vol 264 ◽  
pp. 01014
Author(s):  
Zafar Malikov ◽  
Rafik Matchanov ◽  
Azamat Yuldashev ◽  
Nargiza Djuraeva
Keyword(s):  
Mathematical Modeling ◽  
Turbulence Model ◽  
Gas Flow ◽  
Optimal Parameters ◽  
Two Phase ◽  
Fluid Turbulence ◽  
Chemical Reagents ◽  
Submerged Jets ◽  
Marching Method ◽  
Two Fluid

A mathematical modeling and numerical solution of the motion of the droplets of chemical reagents outflowing from the pneumatic sprayer are developed in the article. A new efficient two-fluid turbulence model is used to simulate turbulent flow. The mass fraction of liquid in the gas stream is considered small. Therefore, the effect of the liquid phase on the dynamics of air is ignored. The "parabolize" system of hydrodynamic equations is solved for the gas flow. For this, a marching method of integrating equations is used. The Lagrange approach is used to find the droplet trajectories. It is shown that the new turbulence model can be successfully applied to study two-phase submerged jets. The solutions obtained made it possible to determine a pattern of the field treatment by chemical reagents and define the sprayer's optimal parameters.

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

Interfacial Pressure Coefficient for Ellipsoids and Its Effect on the Two-Fluid Model Eigenvalues

2016 ◽  
Vol 138 (8) ◽  
Author(s):  
Avinash Vaidheeswaran ◽  
Martin Lopez de Bertodano
Keyword(s):  
Fluid Model ◽  
Pressure Coefficient ◽  
Well Posedness ◽  
Virtual Mass ◽  
Two Phase Flows ◽  
Two Phase ◽  
Pressure Coefficients ◽  
Interfacial Pressure ◽  
Two Fluid Model ◽  
Two Fluid

Analytical expressions for interfacial pressure coefficients are obtained based on the geometry of the bubbles occurring in two-phase flows. It is known that the shape of the bubbles affects the virtual mass and interfacial pressure coefficients, which in turn determines the cutoff void fraction for the well-posedness of two-fluid model (TFM). The coefficient used in the interfacial pressure difference correlation is derived assuming potential flow around a perfect sphere. In reality, the bubbles seen in two-phase flows get deformed, and hence, it is required to estimate the coefficients for nonspherical geometries. Oblate and prolate ellipsoids are considered, and their respective coefficients are determined. It is seen that the well-posedness limit of the TFM is determined by the combination of virtual mass and interfacial pressure coefficient used. The effect of flow separation on the coefficient values is also analyzed.

A two-equation turbulence model for two-phase flows

1983 ◽  
Vol 26 (4) ◽  
pp. 931 ◽  
Author(s):  
S. E. Elghobashi
Keyword(s):  
Turbulence Model ◽  
Two Phase Flows ◽  
Two Phase
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