Lattice Boltzmann modeling of interfacial mass transfer in a multiphase system

Area of Science:

• Computational Fluid Dynamics
• Multiphase Flow Modeling
• Mass Transfer Phenomena

Background:

• Accurate simulation of multiphase mass transfer is crucial for various engineering applications.
• Existing numerical models often face challenges in efficiently handling mass transfer across interfaces.
• The Lattice Boltzmann Method (LBM) offers a promising framework for simulating complex fluid dynamics.

Purpose of the Study:

• To propose a novel numerical model for simulating multiphase mass transfer.
• To introduce the Continuum Species Transfer (CST) formulation within the LBM framework.
• To validate the model's applicability across diverse benchmark cases.

Main Methods:

• Development of the Continuum Species Transfer Lattice Boltzmann Method (CST-LBM) model.
• Incorporation of an additional collision term for mass transfer across the multiphase interface.
• Coupling CST-LBM with a pseudopotential multiphase model for simulations.

Main Results:

• Successful simulation of concentration jumps near interfaces.
• Accurate prediction of gas dissolution in closed systems.
• Effective modeling of species transport during capillary drainage and in porous media.

Conclusions:

• The CST-LBM model provides a robust and versatile approach for multiphase mass transfer simulations.
• The model demonstrates broad applicability and can be coupled with various multiphase LBMs.
• This method enhances the simulation capabilities for complex interfacial phenomena.