Semi-Lagrangian lattice Boltzmann model for compressible flows on unstructured meshes

Autor: Mohammad Hossein Saadat, Iliya V. Karlin, Fabian Bösch

Publikováno v: Physical Review E
Physical Review E, 101 (2)

Compressible lattice Boltzmann model on standard lattices [M. H. Saadat, F. Bösch, and I. V. Karlin, Phys. Rev. E 99, 013306 (2019).] is extended to deal with complex flows on unstructured grid. Semi-Lagrangian propagation [A. Krämer et al., Phys.

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Entropic multi-relaxation time lattice Boltzmann model for complex flows

Autor: Fabian Bösch, Shyam S. Chikatamarla, Ilya V. Karlin, Benedikt Dorschner, Konstantinos Boulouchos

Publikováno v: Journal of Fluid Mechanics. 801:623-651

Entropic lattice Boltzmann methods were introduced to overcome the stability issues of lattice Boltzmann models for high Reynolds number turbulent flows. However, to date their validity has been investigated only for simple flows due to the lack of a

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https://doi.org/10.1017/jfm.2016.448

Grad's approximation for moving and stationary walls in entropic lattice Boltzmann simulations

Autor: Iliya V. Karlin, Benedikt Dorschner, Fabian Bösch, Shyam S. Chikatamarla

Publikováno v: Journal of Computational Physics. 295:340-354

We introduce a new generalized wall boundary condition for the entropic lattice Boltzmann method (ELBM) that is capable of handling complex flow geometries including moving walls. The Grad's ten moments approximation is employed to approximate the mi

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https://doi.org/10.1016/j.jcp.2015.04.017

Entropy-Assisted Computing of Low-Dissipative Systems

Autor: Fabian Bösch, Shyam S. Chikatamarla, Ilya Karlin, Sauro Succi

Publikováno v: Entropy
Volume 17
Issue 12
Pages 8099-8110
Entropy (Basel, Online) 17 (2015): 8099–8110. doi:10.3390/e17127867
info:cnr-pdr/source/autori:Karlin, Ilya V.; Boesch, Fabian; Chikatamarla, Shyam S.; Succi, Sauro/titolo:Entropy-Assisted Computing of Low-Dissipative Systems/doi:10.3390%2Fe17127867/rivista:Entropy (Basel, Online)/anno:2015/pagina_da:8099/pagina_a:8110/intervallo_pagine:8099–8110/volume:17
Entropy, Vol 17, Iss 12, Pp 8099-8110 (2015)
Entropy; Volume 17; Issue 12; Pages: 8099-8110
Entropy, 17 (12)

Entropy feedback is reviewed and highlighted as the guiding principle to reach extremely low dissipation. This principle is illustrated through turbulent flow simulations using the entropic lattice Boltzmann scheme.
Entropy, 17 (12)
ISSN:10

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Entropic Multi-Relaxation Models for Simulation of Fluid Turbulence

Autor: Fabian Bösch, Shyam S. Chikatamarla, Ilya Karlin

Publikováno v: ESAIM: Proceedings and Surveys, Vol 52, Pp 1-24 (2015)

A recently introduced family of lattice Boltzmann (LB) models (Karlin, B\"osch, Chikatamarla, Phys. Rev. E, 2014) is studied in detail for incompressible two-dimensional flows. A framework for developing LB models based on entropy considerations is l

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