A multi-block adaptive solving technique based on lattice Boltzmann method
Keyword(s):
In this paper, a CFD parallel adaptive algorithm is self-developed by combining the multi-block Lattice Boltzmann Method (LBM) with Adaptive Mesh Refinement (AMR). The mesh refinement criterion of this algorithm is based on the density, velocity and vortices of the flow field. The refined grid boundary is obtained by extending outward half a ghost cell from the coarse grid boundary, which makes the adaptive mesh more compact and the boundary treatment more convenient. Two numerical examples of the backward step flow separation and the unsteady flow around circular cylinder demonstrate the vortex structure of the cold flow field accurately and specifically.
2021 ◽
2018 ◽
Vol 118
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pp. 249-259
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2021 ◽
2017 ◽
Vol 2017.30
(0)
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pp. 022
2016 ◽
Vol 2016.29
(0)
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pp. 064
2016 ◽
Vol 315
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pp. 65-83
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2019 ◽
Vol 193
(11)
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pp. 1219-1237
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