# 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 Conference Papers

Title A large-eddy simulation of two side-by-side circular cylinders in cross flow Chen, L Tu, J 2003 International Conference on Computational Fluid Dynamics Sydney, Australia 28 July 2006 Proceedings of the Second International Conference on Computational Fluid Dynamics S. Armfield et al. Springer Berlin, Germany 903 910 8 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. Aerodynamics (excl. Hypersonic Aerodynamics) two square cylinders arranged side by side symmetrical flow around body spectrum analysis large eddy simulation ETG finite element drag coefficient lift coefficient 10.1007/BF02438798 © Editorial Committee of Appl. Math. Mech. 1573-2754
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