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Semi-Lagrangian off-lattice Boltzmann method for weakly compressible flows

  • The lattice Boltzmann method is a simulation technique in computational fluid dynamics. In its standard formulation, it is restricted to regular computation grids, second-order spatial accuracy, and a unity Courant-Friedrichs-Lewy (CFL) number. This paper advances the standard lattice Boltzmann method by introducing a semi-Lagrangian streaming step. The proposed method allows significantly larger time steps, unstructured grids, and higher-order accurate representations of the solution to be used. The appealing properties of the approach are demonstrated in simulations of a two-dimensional Taylor-Green vortex, doubly periodic shear layers, and a three-dimensional Taylor-Green vortex.

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Metadaten
Document Type:Article
Language:English
Author:Andreas Krämer, Knut Küllmer, Dirk Reith, Wolfgang Joppich, Holger Foysi
Parent Title (English):Phys. Rev. E (Physical Review E)
Volume:95
First Page:023305
ISSN:2470-0045
DOI:https://doi.org/10.1103/PhysRevE.95.023305
Pubmed Id:http://www.ncbi.nlm.nih.gov/pubmed?term=28297853
Publisher:American Physical Society
Date of first publication:2017/02/03
Departments, institutes and facilities:Fachbereich Elektrotechnik, Maschinenbau, Technikjournalismus
Institut für Technik, Ressourcenschonung und Energieeffizienz (TREE)
Dewey Decimal Classification (DDC):5 Naturwissenschaften und Mathematik / 53 Physik / 532 Mechanik der Fluide; Mechanik der Flüssigkeiten
6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Entry in this database:2017/02/06