Robustness and efficiency of encapsulated selective frequency damping using different operator-splitting schemes: Application to laminar cylinder flow and transonic buffet
文献类型：期刊论文
| 作者 | Wei LY(韦莲旖)1,4; Zheng GN(郑冠男)2,4; Nie XY(聂雪媛)2,4; Lv, Jinan3; Huang CD(黄程德)2,4; Lu WS(陆维爽)4; Zhang YC(张煜宸)1,4; Yang GW(杨国伟)1,2,4 |
| 刊名 | JOURNAL OF COMPUTATIONAL PHYSICS
 |
| 出版日期 | 2025-07-01 |
| 卷号 | 532页码:27 |
| 关键词 | Selective frequency damping Unstable steady solution UNSE Operator-splitting schemes Local splitting errors Lie operator formalism |
| ISSN号 | 0021-9991 |
| DOI | 10.1016/j.jcp.2025.113968 |
| 通讯作者 | Zheng, Guannan(zhengguannan@imech.ac.cn) |
| 英文摘要 | A modified encapsulated selective frequency damping (MESFD) method based on the Strang splitting scheme is developed in this study. As a comparison the widely-used encapsulated form of selective frequency damping (ESFD) method constructed from the sequential splitting scheme is also introduced. Both methods are implemented into an implicit-time stepping Unsteady NavierStokes Equation (UNSE) solver and applied to solve the unstable steady solutions of the laminar cylinder flow and transonic buffet. It turns out that ESFD performs better than MESFD in convergence to the steady solution of the cylinder flow while MESFD does better in calculating the unstable steady solution of transonic buffet than ESFD. The traditional perspective of the global modes or the stability region fails to explain such discrepancies given that the same parameter combination of the control gain chi and the filtered width Delta is chosen in both methods. However, the viewpoint of local splitting errors established from the Lie operator formalism that relates the structure of the local splitting errors to the spatial accuracy and the parameter set (chi, Delta ) gives new insights into the differences between MESFD and ESFD. How the local splitting errors contribute to the calculation and how to choose proper (chi, Delta ) accordingly are discussed in these two flow problems. For the laminar cylinder flow problem, both ESFD and MESFD are independent of the mesh size. For the turbulent transonic buffet problem, although both ESFD and MESFD are highly sensitive to the mesh set up, MESFD is more robust and efficient for convergence to the unstable steady solution compared to ESFD. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | DYNAMIC-MODE DECOMPOSITION ; SUPERCRITICAL AIRFOIL ; NUMBER ; WAKE |
| 资助项目 | National Natural Science Foundation of China[12372171] ; National Natural Science Foundation of China[12302230] |
| WOS研究方向 | Computer Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001468155700001 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | 郑冠男 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101103]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.China Acad launch vehicle technol, Beijing 100076, Peoples R China 4.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wei LY,Zheng GN,Nie XY,et al. Robustness and efficiency of encapsulated selective frequency damping using different operator-splitting schemes: Application to laminar cylinder flow and transonic buffet[J]. JOURNAL OF COMPUTATIONAL PHYSICS,2025,532:27. |
| APA | 韦莲旖.,郑冠男.,聂雪媛.,Lv, Jinan.,黄程德.,...&杨国伟.(2025).Robustness and efficiency of encapsulated selective frequency damping using different operator-splitting schemes: Application to laminar cylinder flow and transonic buffet.JOURNAL OF COMPUTATIONAL PHYSICS,532,27. |
| MLA | 韦莲旖,et al."Robustness and efficiency of encapsulated selective frequency damping using different operator-splitting schemes: Application to laminar cylinder flow and transonic buffet".JOURNAL OF COMPUTATIONAL PHYSICS 532(2025):27. |
入库方式： OAI收割
来源：力学研究所
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