Role of Fourier phase dynamics in decaying turbulence
文献类型：期刊论文
| 作者 | Wang, Chuhan; Fang, Le; Wang Z(王展) ; Xu, Chunxiao
|
| 刊名 | PHYSICAL REVIEW FLUIDS
 |
| 出版日期 | 2024-11 |
| 卷号 | 9期号:11页码:114603 |
| ISSN号 | 2469-990X |
| DOI | 10.1103/PhysRevFluids.9.114603 |
| 英文摘要 | A previous study in stochastically forced 1D Burgers flows reveals a dynamical synchronization of Fourier triadic phases during burst events associated with intense forward energy fluxes (Murray and Bustamante, J. Fluid Mech. 850, 624 (2018). Conversely, it is yet to be determined whether the dynamical evolution of Fourier phases is necessary for forming forward energy cascades in more general flow systems, particularly in 3D turbulent flows. We propose a frozen-phase experiment in which only the Fourier amplitudes evolve temporally, with a fixed set of Fourier phases prescribed. The method employed to freeze the phases can be considered a designed forcing term in the spectral space that only acts on the evolution equation of Fourier phases. The results suggest the essential role of Fourier phase dynamics in the formation of a standard energy cascade in 3D turbulent flows. However, forming an attenuated energy cascade without any phase dynamics is still possible. These findings are supported by the values of longitudinal velocity gradient skewness and the Kolmogorov constants, which deviate from classical ones when the phases are frozen. |
| 分类号 | 二类 |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001356741100002 |
| 资助机构 | Shuimu postdoc fellowship from Tsinghua University ; National Natural Science Foundation of China (NSFC) {12372214, 12325207, U2341231] ; Science Center for Gas Turbine Project {P2022-C-III-001-001] |
| 其他责任者 | Fang L |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97244]  |
| 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.【Wang, Zhan】 Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.【Wang, Zhan】 Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 3.【Fang, Le】 Beihang Univ, Ecole Cent Pekin, Beijing 100191, Peoples R China 4.【Wang, Chuhan & Xu, Chunxiao】 Tsinghua Univ, AML, Dept Engn Mech, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Chuhan,Fang, Le,Wang Z,et al. Role of Fourier phase dynamics in decaying turbulence[J]. PHYSICAL REVIEW FLUIDS,2024,9(11):114603. |
| APA | Wang, Chuhan,Fang, Le,王展,&Xu, Chunxiao.(2024).Role of Fourier phase dynamics in decaying turbulence.PHYSICAL REVIEW FLUIDS,9(11),114603. |
| MLA | Wang, Chuhan,et al."Role of Fourier phase dynamics in decaying turbulence".PHYSICAL REVIEW FLUIDS 9.11(2024):114603. |
入库方式： OAI收割
来源：力学研究所
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