An efficient unified iterative scheme for moving boundaries in lattice Boltzmann method

2017 ◽  
Vol 144 ◽  
pp. 34-43 ◽  
Author(s):  
Junjie Hu ◽  
Shi Tao ◽  
Zhaoli Guo
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Iterative Scheme ◽  
Moving Boundaries ◽  
Boltzmann Method

Mass-conserved volumetric lattice Boltzmann method for complex flows with willfully moving boundaries

2014 ◽  
Vol 89 (6) ◽  
Author(s):  
Huidan Yu ◽  
Xi Chen ◽  
Zhiqiang Wang ◽  
Debanjan Deep ◽  
Everton Lima ◽  
...  
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Moving Boundaries ◽  
Complex Flows ◽  
Boltzmann Method

A novel scheme for curved moving boundaries in the lattice Boltzmann method

2016 ◽  
Vol 27 (12) ◽  
pp. 1650144 ◽  
Author(s):  
Lina Xu ◽  
Parthib Rao ◽  
Laura Schaefer
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Numerical Stability ◽  
Moving Boundary ◽  
Moving Boundaries ◽  
Curved Surfaces ◽  
Galilean Invariance ◽  
Validation Tests ◽  
Boltzmann Method ◽  
Improved Accuracy

We propose a novel scheme to handle moving boundaries, both straight and curved, within the lattice Boltzmann method (LBM). In this scheme, which is broadly based on the Chapman–Enskog expansion, the fictitious distributions are constructed exactly on the moving boundary. This is in contrast to existing methods where such distributions are constructed on neighboring nodes which may not lie on the moving boundary. The post-collisional distributions on the fluid nodes near the moving boundary are then constructed using first- or second-order interpolations. The proposed scheme also overcomes the requirement to have separate interpolation formulations for different values of the intersection parameter. Several validation tests presented here indicate improved accuracy and numerical stability, compliance with Galilean invariance principle, an ability to preserve the geometric fidelity of curved surfaces.

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