Abstract

A coarse-grained version of the Lattice Boltzmann (LB) method is developed\nwith the intent of enhancing its geometrical flexibility so as to be able to\ntackle a wider class of flows of engineering interest. To this purpose, the\noriginal uniform LB technique is combined with standard finite-volume\ntechniques based upon a blend of piecewise constant and piecewise linear\ninterpolation schemes. A series of validation tests for the three dimensional\nchannel flow with one-dimensional (cross-channel) statistical behaviour are\npresented. The main conclusion is that, although the method does indeed mark a\nsignificant stride forward with respect to the original uniform LB scheme,\nbetter interpolation schemes should be developed before the coarse-grain LB can\nbecome fully competitive with modern CFD schemes.\n

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Year
1997
Type
article
Volume
19
Issue
5
Pages
289-302
Citations
31
Access
Closed

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Giorgio Amati, Sauro Succi, Roberto Benzi et al. (1997). Turbulent channel flow simulations using a coarse-grained extension of the lattice Boltzmann method. Fluid Dynamics Research , 19 (5) , 289-302. https://doi.org/10.1016/s0169-5983(96)00026-3

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DOI
10.1016/s0169-5983(96)00026-3