Lattice-Boltzmann Model Development For Capillary Pressure Gradient Gas/Liquid Phase Separation in Microgravity

2011 ◽  
Author(s):  
James Parker ◽  
Goran Jovanovic ◽  
Richard Wheeler ◽  
Walter Duval
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Pressure Gradient ◽  
Capillary Pressure ◽  
Lattice Boltzmann ◽  
Model Development ◽  
Liquid Phase Separation ◽  
Lattice Boltzmann Model ◽  
Boltzmann Model ◽  
Capillary Pressure Gradient

scholarly journals Lattice Boltzmann Modeling-based Design of a Membrane-free Liquid-liquid Microseparator

2020 ◽  
Vol 34 (2) ◽  
pp. 73-78
Author(s):  
Filip Strniša ◽  
Polona Žnidaršič-Plazl ◽  
Igor Plazl
Keyword(s):  
Pressure Gradient ◽  
Capillary Pressure ◽  
Lattice Boltzmann ◽  
In Silico ◽  
Continuous Processing ◽  
Geometrical Characteristics ◽  
Internal Structures ◽  
Simulation Results ◽  
Lattice Boltzmann Modeling ◽  
Capillary Pressure Gradient

The benefits of continuous processing and the challenges related to the integration with efficient downstream units for end-to-end manufacturing have spurred the development of efficient miniaturized continuously-operated separators. Membrane-free microseparators with specifically positioned internal structures subjecting fluids to a capillary pressure gradient have been previously shown to enable efficient gas-liquid separation. Here we present initial studies on the model-based design of a liquid-liquid microseparator with pillars of various diameters between two plates. For the optimization of in silico separator performance, mesoscopic lattice-Boltzmann modeling was used. Simulation results at various conditions revealed the possibility to improve the separation of two liquids by changing the geometrical characteristics of the microseparator.

Lattice Boltzmann Simulations for Thermal Vapor-Liquid Two-Phase Flows

2012 ◽  
Vol 4 (1) ◽  
pp. 103-109 ◽  
Author(s):  
Yikun. Wei
Keyword(s):  
Fluid Dynamics ◽  
Liquid Phase ◽  
Internal Energy ◽  
Lattice Boltzmann ◽  
Distribution Functions ◽  
Lattice Boltzmann Model ◽  
Two Phase ◽  
Energy Field ◽  
Boltzmann Model ◽  
Vapor Liquid

Lattice Boltzmann model with a double distribution functions are used to simulate thermal vapor-liquid two-phase flow. In this model, the single component multi-phase lattice Boltzmann model proposed by Zhang and Chen is used to simulate the fluid dynamics. The internal energy is simulated by using a energy distribution functions. By coupling the fluid dynamics and internal energy field through a suitably defined density term, the thermal gas-liquid phase flows are simulating. Numerical results on phase separation show the coexistence curves of numerical simulations are in good agreement with the theoretical predictions for the density of gas-liquid phase, and the internal energy of gas is higher than the internal energy of liquid at the same reduced temperature.

Sign in / Sign up

Export Citation Format

Share Document