Title: Accurate computations of the laminar flow past a square cylinder based on two different methods: Lattice-Boltzmann and finite-volume
Authors: Breuer, Michael 
Bernsdorf, J.
Zeiser, Thomas
Durst, Franz
Language: eng
Issue Date: Apr-2000
Publisher: Elsevier
Document Type: Article
Journal / Series / Working Paper (HSU): International Journal of Heat and Fluid Flow
Volume: 21
Issue: 2
Page Start: 186
Page End: 196
The confined flow around a cylinder with square cross-section mounted inside a plane channel (blockage ratio B = 1/8) was investigated in detail by two entirely different numerical techniques, namely a lattice-Boltzmann automata (LBA) and a finite-volume method (FVM). In order to restrict the approach to 2D computations, the largest Reynolds number chosen was Re = 300 based on the maximum inflow velocity and the chord length of the square cylinder. The LBA was built up on the D2Q9 model and the single relaxation time method called the lattice-BGK method. The finite-volume code was based on an incompressible Navier-Stokes solver for arbitrary non-orthogonal, body-fitted grids. Both numerical methods are of second-order accuracy in space and time. Accurate computations were carried out on grids with different resolutions. The results of both methods were evaluated and compared in detail. Both velocity profiles and integral parameters such as drag coefficient, recirculation length and Strouhal number were investigated. Excellent agreement between the LBA and FVM computations was found. (C) 2000 Elsevier Science Inc. All rights reserved.
Organization Units (connected with the publication): Universität Erlangen-Nürnberg
ISSN: 0142727X
Publisher DOI: 10.1016/S0142-727X(99)00081-8
Appears in Collections:6 - Bibliographic Data - Publications of the HSU Researchers (before HSU)

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