Simulation of a 2D Channel Flow Around a Square Obstacle with Lattice-Boltzmann (BGK) Automata

J. Bernsdorf (), Th. Zeiser, G. Brenner and F. Durst
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J. Bernsdorf: Institute of Fluid Mechanics (LSTM), University Erlangen – Nuremberg, Cauerstr. 4, D – 91058 Erlangen, Germany
Th. Zeiser: Institute of Fluid Mechanics (LSTM), University Erlangen – Nuremberg, Cauerstr. 4, D – 91058 Erlangen, Germany
G. Brenner: Institute of Fluid Mechanics (LSTM), University Erlangen – Nuremberg, Cauerstr. 4, D – 91058 Erlangen, Germany
F. Durst: Institute of Fluid Mechanics (LSTM), University Erlangen – Nuremberg, Cauerstr. 4, D – 91058 Erlangen, Germany

International Journal of Modern Physics C (IJMPC), 1998, vol. 09, issue 08, 1129-1141

Abstract: Results for time-dependent, viscous, incompressible flows were investigated using the lattice-Boltzmann (BGK) automata. The decay of a synthetic turbulent flow field and the time evolution of an initial vortex were simulated for validation purposes. The focal point was the investigation of the instationary flow around a square obstacle in a two-dimensional channel for a range of Reynolds numbers between 80 and 300 and a blockage ratio of 0.125. The Strouhal number was measured for this case and found to be in the range of data given in the literature.

Keywords: Lattice-Boltzmann; Turbulent Flow; Square Cylinder Flow; Strouhal Number (search for similar items in EconPapers)
Date: 1998
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DOI: 10.1142/S0129183198001047

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