A lattice Boltzmann study of 2D steady and unsteady flows around a confined cylinder

Strniša, Filip (author), Urbič, Tomaž (author), Plazl, Igor (author)

In this work, the lattice Boltzmann (LB) method was applied to simulate incompressible steady and unsteady low Reynolds number (Re) flows around a confined cylinder. In the LB method, different collision models (Bhatnagar–Gross–Krook model, two-relaxation-time model, multi-relaxation-time model, and entropic lattice Boltzmann model) and a regularization model were used, and the results were compared. Numerical results pertaining to a two-dimensional flow around a cylinder are reported and compared with numerical and experimental data available in the literature. The results agree with the predictions made from the literature. A correlation for Strouhal number (St) for 55 ≤ Re ≤ 300 is suggested.

• Language: English
• Keywords: lattice Boltzmann model, collision models, flow around cylinder, Strouhal number, on Kármán vortex street, 2D flow
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Publication status: Published
• Publication version: Version of Record
• Year: 2020
• Number of pages: Str. 1-13
• Numbering: Vol. 42, iss. 2, art. 103
• PID: 20.500.12556/RUL-127086
• UDC: 66.02
• ISSN on article: 1678-5878
• DOI: 10.1007/s40430-020-2176-y
• COBISS.SI-ID: 1538517699
• Publication date in RUL: 17.05.2021

Record is a part of a journal

• Title: Journal of the Brazilian Society of Mechanical Sciences and Engineering
• Shortened title: J. Braz. Soc. Mech. Sci. Eng.
• Publisher: Springer Berlin Heidelberg
• ISSN: 1678-5878
• COBISS.SI-ID: 16931350

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 28.01.2020

Secondary language

• Language: Slovenian
• Keywords: mrežni Boltzmannovi modeli, modeli trka, tok okoli cilindra, Strouhalovo število, von Kármánova ulica vrtincev, 2D tok