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Keywords: fluid-structure interaction, spectral element method, penalization method, immersed boundary method.

Summary

In this paper, an immersed-boundary-type simulation tool, is developed, to simulate the two-way interaction of a two-dimensional rigid body moving in an incompressible viscous fluid. In this two-dimensional simulator, the entire fluid-solid domain is treated as an incompressible fluid with non-uniform density. The no-slip boundary condition at the rigid body surface is enforced by the penalization method, namely by adding a penalization term in the momentum equation which vanishes outside the rigid body. The fluid solver is developed using the spectral element method for the spatial discretization and a mixed explicit-implicit scheme for the temporal discretization. A smoothing scheme called the "sub-cell scheme" is proposed to take care of the discontinuity at the fluid-structure interface. The sedimentation of a circular cylinder in a channel was simulated to test the validity and accuracy of the proposed fluid-structure interation scheme. The simulation results agree well with those in the existing literatures.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 105 PROCEEDINGS OF THE NINTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: Paper 77 A Spectral-Element Simulator for Two-Dimensional Rigid-Body-Fluid Interaction Problems L.-C. Chen and M.-J. Huang Mechanical Engineering Department, National Taiwan University, Taipei, Taiwa doi:10.4203/ccp.105.77 purchase the full-text of this paper Full Bibliographic Reference for this paper L.-C. Chen, M.-J. Huang, "A Spectral-Element Simulator for Two-Dimensional Rigid-Body-Fluid Interaction Problems", in , (Editors), "Proceedings of the Ninth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 77, 2014. doi:10.4203/ccp.105.77 Keywords: fluid-structure interaction, spectral element method, penalization method, immersed boundary method. Summary In this paper, an immersed-boundary-type simulation tool, is developed, to simulate the two-way interaction of a two-dimensional rigid body moving in an incompressible viscous fluid. In this two-dimensional simulator, the entire fluid-solid domain is treated as an incompressible fluid with non-uniform density. The no-slip boundary condition at the rigid body surface is enforced by the penalization method, namely by adding a penalization term in the momentum equation which vanishes outside the rigid body. The fluid solver is developed using the spectral element method for the spatial discretization and a mixed explicit-implicit scheme for the temporal discretization. A smoothing scheme called the "sub-cell scheme" is proposed to take care of the discontinuity at the fluid-structure interface. The sedimentation of a circular cylinder in a channel was simulated to test the validity and accuracy of the proposed fluid-structure interation scheme. The simulation results agree well with those in the existing literatures. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £45 +P&P)
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