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http://dx.doi.org/10.12989/gae.2019.18.6.651

Simulated of flow in a three-dimensional porous structure by using the IB-SEM system  

Wang, Jing (School of Qilu Transportation, Shandong University)
Li, Shucai (School of Qilu Transportation, Shandong University)
Li, Liping (School of Qilu Transportation, Shandong University)
Song, Shuguang (Research Center of Geotechnical and Structural Engineering, Shandong University)
Lin, Peng (School of Qilu Transportation, Shandong University)
Ba, Xingzhi (School of Qilu Transportation, Shandong University)
Publication Information
Geomechanics and Engineering / v.18, no.6, 2019 , pp. 651-659 More about this Journal
Abstract
The IB-SEM numerical method combines the spectral/hp element method and the rigid immersed boundary method. This method avoids the problems of low computational efficiency and errors that are caused by the re-division of the grid when the solids move. Based on the Fourier transformation and the 3D immersed boundary method, the 3D IB-SEM system was established. Then, using the open MPI and the Hamilton HPC service, the computational efficiency was increased substantially. The flows around a cylinder and a sphere were simulated by the system. The surface of the cylinder generates vortices with alternating shedding, and these vortices result in a periodic force acting on the surface of the cylinder. When the shedding vortices enter the flow field behind the cylinder, a recirculation zone is formed. Finally, the three-dimensional pore flow was successfully investigated.
Keywords
Fourier transformation; 3D immersed boundary method; the 3D IB-SEM system; open MPI;
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Times Cited By KSCI : 2  (Citation Analysis)
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