Fluid-structure interaction (FSI) problems in microchannels play prominent role in many engineering applications. The present study is an effort toward the simulation of flow in microchannel considering FSI. Bottom boundary of the microchannel is simulated by size-dependent beam elements for finite element method (FEM) based on a modified couple stress theory. The lattice Boltzmann method (LBM) using D2Q13 LB model is coupled to the FEM in order to solve fluid part of FSI problem. Because of the fact that LBM generally needs only nearest neighbor information, the algorithm is an ideal candidate for parallel computing. The simulations are carried out on graphics processing units (GPUs) using computed unified device architecture (CUDA). In the present study, the governing equations are non-dimensionalized and the set of dimensionless groups is exhibited to show their effects on micro-beam displacement. The numerical results show that the displacements of the micro-beam predicted by the size-dependent beam element are smaller than those by the classical beam element
| مقالات | |
| حجم فایل | 845 کیلوبایت |
| زبان مقاله | ENGLISH |
| سال انتشار | 2014 |
| محل انتشار | Chinese Physical Society and IOP Publishing Ltd |
| مشخصات کلی | |
| تعداد صفحات | 7 |
| تعداد صفحات محصول | 1-20 |
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Simulation of fluid-structure interaction in microchannel using lattice Boltzmann method and size-dependent beam element on graphics processing unit
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