@Article{CiCP-33-1, author = {Klass, Friedemann and Gabbana, Alessandro and Bartel, Andreas}, title = {A Characteristic Boundary Condition for Multispeed Lattice Boltzmann Methods}, journal = {Communications in Computational Physics}, year = {2023}, volume = {33}, number = {1}, pages = {101--117}, abstract = {

We present the development of a non-reflecting boundary condition, based on the Local One-Dimensional Inviscid (LODI) approach, for Lattice Boltzmann Models working with multi-speed stencils.
We test and evaluate the LODI implementation with numerical benchmarks, showing significant accuracy gains with respect to the results produced by a simple zero-gradient condition. We also implement a simplified approach, which allows handling the unknown distribution functions spanning several layers of nodes in a unified way, still preserving a comparable level of accuracy with respect to the standard formulation.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2022-0052}, url = {https://global-sci.com/article/79406/a-characteristic-boundary-condition-for-multispeed-lattice-boltzmann-methods} }