In this work, we are concerned with robust parallel simulations of multicomponent flows in complex ge- ometries by an extended lattice Boltzmann method. In Zudrop et al. (2014) [22] we presented a model for the incompressible Navier–Stokes and Maxwell–Stefan diffusion equations. Here, we prove that the implicit-to-explicit variable transformation of the model is well-posed under weak constraints on the di- mensionless Maxwell–Stefan diffusivities. Furthermore, we analyze various boundary conditions for the multicomponent lattice Boltzmann model. These results make the model robust and well suited for com- plex geometries, which allows us to study realistic, large-scale mass transport applications.

A robust lattice Boltzmann method for parallel simulations of multicomponent flows in complex geometries / Zudrop, Jens; Masilamani, Kannan; Roller, Sabine; Asinari, Pietro. - In: COMPUTERS & FLUIDS. - ISSN 0045-7930. - ELETTRONICO. - 153:(2017), pp. 20-33. [10.1016/j.compfluid.2017.04.021]

A robust lattice Boltzmann method for parallel simulations of multicomponent flows in complex geometries

ASINARI, PIETRO
2017

Abstract

In this work, we are concerned with robust parallel simulations of multicomponent flows in complex ge- ometries by an extended lattice Boltzmann method. In Zudrop et al. (2014) [22] we presented a model for the incompressible Navier–Stokes and Maxwell–Stefan diffusion equations. Here, we prove that the implicit-to-explicit variable transformation of the model is well-posed under weak constraints on the di- mensionless Maxwell–Stefan diffusivities. Furthermore, we analyze various boundary conditions for the multicomponent lattice Boltzmann model. These results make the model robust and well suited for com- plex geometries, which allows us to study realistic, large-scale mass transport applications.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2670743
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