We perform the viscosity-independent Stokes flow simulations in regular sphere packings using the two-relaxation-times (TRT) lattice Boltzmann method (LBM) with the simple bounce-back (BB) rule. Our special discretization procedure reduces the scatter in integral quantities, such as drag force, and quantifies the solution convergence error. We assume transition to linear (−1) convergence rate for different sets of TRT parameters and use this assumption to provide a simple extrapolation scheme. After establishing the accurate reference values of drag for a wide range of porosities, 0.26–0.78, we show a ten-fold decrease in the drag error using the suggested extrapolations. This error decrease allows the simple LBM/BB scheme to reach an accuracy of the high-order interpolated boundary schemes. The suggested extrapolation approach is straightforward to apply in porous media, whose pore space can be discretized at several resolutions.
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September 2018
Research Article|
September 14 2018
Behavior of numerical error in pore-scale lattice Boltzmann simulations with simple bounce-back rule: Analysis and highly accurate extrapolation
Siarhei Khirevich;
Siarhei Khirevich
a)
Ali I. Al-Naimi Petroleum Engineering Research Center, King Abdullah University of Science and Technology
, Thuwal, Saudi Arabia
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Tadeusz W. Patzek
Tadeusz W. Patzek
Ali I. Al-Naimi Petroleum Engineering Research Center, King Abdullah University of Science and Technology
, Thuwal, Saudi Arabia
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a)
Electronic mail: [email protected]
Physics of Fluids 30, 093604 (2018)
Article history
Received:
May 30 2018
Accepted:
August 28 2018
Citation
Siarhei Khirevich, Tadeusz W. Patzek; Behavior of numerical error in pore-scale lattice Boltzmann simulations with simple bounce-back rule: Analysis and highly accurate extrapolation. Physics of Fluids 1 September 2018; 30 (9): 093604. https://doi.org/10.1063/1.5042229
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