A spectral-element/Fourier smoothed profile method for large-eddy simulations of complex VIV problems
© 2018 Elsevier Ltd An accurate, fast and robust spectral-element/Fourier smoothed profile method (SEF-SPM) for turbulent flow past 3D complex-geometry moving bluff-bodies is developed and analyzed in this paper. Based on the concept of momentum thickness δ2, a new formula for determining the interf...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Elsevier BV
2021
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| Online Access: | https://hdl.handle.net/1721.1/135842 |
| _version_ | 1826195264851935232 |
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| author | Wang, Zhicheng Triantafyllou, Michael S Constantinides, Yiannis Karniadakis, George Em |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Zhicheng Triantafyllou, Michael S Constantinides, Yiannis Karniadakis, George Em |
| author_sort | Wang, Zhicheng |
| collection | MIT |
| description | © 2018 Elsevier Ltd An accurate, fast and robust spectral-element/Fourier smoothed profile method (SEF-SPM) for turbulent flow past 3D complex-geometry moving bluff-bodies is developed and analyzed in this paper. Based on the concept of momentum thickness δ2, a new formula for determining the interface thickness parameter ξ is proposed. In order to overcome the numerical instability at high Reynolds number, the so-called Entropy Viscosity Method (EVM) is introduced in the framework of large-eddy simulation. To overcome resolution constraints pertaining to moving immersed bodies, the Coordinate Transformation Method (Mapping method) is incorporated in the current implementation. Moreover, a hybrid spectral-element method using mixed triangular and quadrilateral elements is employed in conjunction with Fourier discretization along the third direction to efficiently represent a body of revolution or a long-aspect ratio bluff-body like risers and cables. The combination of the above algorithms results in a robust method which we validate by several prototype flows, including flow past a stationary sphere at 200 ≤ Re ≤ 1000, as well as turbulent flow past a stationary and moving cylinder at 80 ≤ Re ≤ 10, 000. Finally, we apply the new method to simulate a self-excited rigidly moving dual-step cylinder and demonstrate that SEF-SPM is an efficient method for complex VIV problems. |
| first_indexed | 2024-09-23T10:09:58Z |
| format | Article |
| id | mit-1721.1/135842 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:09:58Z |
| publishDate | 2021 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1358422023-09-26T20:22:02Z A spectral-element/Fourier smoothed profile method for large-eddy simulations of complex VIV problems Wang, Zhicheng Triantafyllou, Michael S Constantinides, Yiannis Karniadakis, George Em Massachusetts Institute of Technology. Department of Mechanical Engineering © 2018 Elsevier Ltd An accurate, fast and robust spectral-element/Fourier smoothed profile method (SEF-SPM) for turbulent flow past 3D complex-geometry moving bluff-bodies is developed and analyzed in this paper. Based on the concept of momentum thickness δ2, a new formula for determining the interface thickness parameter ξ is proposed. In order to overcome the numerical instability at high Reynolds number, the so-called Entropy Viscosity Method (EVM) is introduced in the framework of large-eddy simulation. To overcome resolution constraints pertaining to moving immersed bodies, the Coordinate Transformation Method (Mapping method) is incorporated in the current implementation. Moreover, a hybrid spectral-element method using mixed triangular and quadrilateral elements is employed in conjunction with Fourier discretization along the third direction to efficiently represent a body of revolution or a long-aspect ratio bluff-body like risers and cables. The combination of the above algorithms results in a robust method which we validate by several prototype flows, including flow past a stationary sphere at 200 ≤ Re ≤ 1000, as well as turbulent flow past a stationary and moving cylinder at 80 ≤ Re ≤ 10, 000. Finally, we apply the new method to simulate a self-excited rigidly moving dual-step cylinder and demonstrate that SEF-SPM is an efficient method for complex VIV problems. 2021-10-27T20:29:35Z 2021-10-27T20:29:35Z 2018 2019-09-25T15:24:39Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/135842 en 10.1016/J.COMPFLUID.2018.06.022 Computers and Fluids Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier BV Other repository |
| spellingShingle | Wang, Zhicheng Triantafyllou, Michael S Constantinides, Yiannis Karniadakis, George Em A spectral-element/Fourier smoothed profile method for large-eddy simulations of complex VIV problems |
| title | A spectral-element/Fourier smoothed profile method for large-eddy simulations of complex VIV problems |
| title_full | A spectral-element/Fourier smoothed profile method for large-eddy simulations of complex VIV problems |
| title_fullStr | A spectral-element/Fourier smoothed profile method for large-eddy simulations of complex VIV problems |
| title_full_unstemmed | A spectral-element/Fourier smoothed profile method for large-eddy simulations of complex VIV problems |
| title_short | A spectral-element/Fourier smoothed profile method for large-eddy simulations of complex VIV problems |
| title_sort | spectral element fourier smoothed profile method for large eddy simulations of complex viv problems |
| url | https://hdl.handle.net/1721.1/135842 |
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