Low-Order Moments of Velocity Gradient Tensors in Two-Dimensional Isotropic Turbulence
文献类型：期刊论文
| 作者 | Luo, Chensheng1; Yang PF(杨平凡)2,3 ; Fang, Le1
|
| 刊名 | SYMMETRY-BASEL
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 16期号:2页码:12 |
| 关键词 | two-dimensional turbulence compressible turbulence velocity gradient |
| DOI | 10.3390/sym16020175 |
| 通讯作者 | Fang, Le(le.fang@buaa.edu.cn) |
| 英文摘要 | In isotropic turbulence, symmetry of different directions can reduce the number of independent components for velocity gradient tensors. In three-dimensional isotropic turbulence, the independent components under either incompressible or compressible conditions have already been analyzed in the literature. However, for two-dimensional isotropic turbulence, they are still unclear. We derive rigorously the independent components for velocity gradient tensors of two-dimensional isotropic turbulence and give physical explanations. These theoretical results are validated using high-resolution direct numerical simulations (DNSs) of two-dimensional compressible turbulence. Results show that the present DNS setup is still not sufficient to capture the isotropy of third-order moments, suggesting that more investigations on determining the smallest scale and improving the numerical schemes for two-dimensional compressible turbulence are required. |
| 分类号 | 二类 |
| WOS关键词 | DISSIPATION ; SIMULATION ; VORTICITY ; SCHEME |
| 资助项目 | National Natural Science Foundation of China |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001172219200001 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Fang, Le |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/94634]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Beihang Univ, Ecole Cent Pekin, Sch Gen Engn, Lab Complex Syst, Beijing 100191, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, Chensheng,Yang PF,Fang, Le. Low-Order Moments of Velocity Gradient Tensors in Two-Dimensional Isotropic Turbulence[J]. SYMMETRY-BASEL,2024,16(2):12. |
| APA | Luo, Chensheng,杨平凡,&Fang, Le.(2024).Low-Order Moments of Velocity Gradient Tensors in Two-Dimensional Isotropic Turbulence.SYMMETRY-BASEL,16(2),12. |
| MLA | Luo, Chensheng,et al."Low-Order Moments of Velocity Gradient Tensors in Two-Dimensional Isotropic Turbulence".SYMMETRY-BASEL 16.2(2024):12. |
入库方式： OAI收割
来源：力学研究所
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