A large-eddy simulation of two side-by-side circular cylinders in cross flow

Chen, L and Tu, J 2003, 'A large-eddy simulation of two side-by-side circular cylinders in cross flow', in S. Armfield et al. (ed.) Proceedings of the Second International Conference on Computational Fluid Dynamics, Sydney, Australia, 28 July 2006, pp. 903-910.


Document type: Conference Paper
Collection: Conference Papers

Title A large-eddy simulation of two side-by-side circular cylinders in cross flow
Author(s) Chen, L
Tu, J
Year 2003
Conference name International Conference on Computational Fluid Dynamics
Conference location Sydney, Australia
Conference dates 28 July 2006
Proceedings title Proceedings of the Second International Conference on Computational Fluid Dynamics
Editor(s) S. Armfield et al.
Publisher Springer
Place of publication Berlin, Germany
Start page 903
End page 910
Total pages 8
Abstract Large eddy simulation cooperated with the second order full extension ETG (Euler-Taylor-Galerkin) finite element method was applied to simulate the flow around two square cylinders arranged side by side at a spacing ratio of 1.5. The second order full extension ETG finite element method was developed by Wang and He. By means of Taylor expansion of terms containing time derivative, time derivative is replaced by space derivative. The function of it is equal to introducing an artificial viscosity term. The streamlines of the flow at different moments were obtained. The time history of drag coefficient, lift coefficient and the streamwise velocity on the symmetrical points were presented. Furthermore, the symmetrical problem of the frequency spectrum of flow around two square cylinders arranged side by side were studied by using the spectral analysis technology. The data obtained at the initial stage are excluded in order to avoid the influence of initial condition on the results. The power spectrums of drag coefficient, lift coefficient, the streamwise velocity on the symmetrical points were analyzed respectively. The results show that although the time domain process of dynamic parameters is nonsymmetrical, the frequency domain process of them is symmetrical under the symmetrical boundary conditions.
Subjects Aerodynamics (excl. Hypersonic Aerodynamics)
Keyword(s) two square cylinders arranged side by side
symmetrical flow around body
spectrum analysis
large eddy simulation
ETG finite element
drag coefficient
lift coefficient
DOI - identifier 10.1007/BF02438798
Copyright notice © Editorial Committee of Appl. Math. Mech.
ISBN 1573-2754
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