| Title | Multifractality and scale-free network topology in a noise-perturbed laminar jet |
| Author | |
| Corresponding Author | Guan, Yu; Li, Larry K. B. |
| Publication Years | 2023-09-26
|
| DOI | |
| Source Title | |
| ISSN | 0022-1120
|
| EISSN | 1469-7645
|
| Volume | 972 |
| Abstract | We present experimental evidence of multifractality and scale-free network topology in a noise-perturbed laminar jet operated in a globally stable regime, prior to the critical point of a supercritical Hopf bifurcation and prior to the saddle-node point of a subcritical Hopf bifurcation. For both types of bifurcation, we find that (i) the degree of multifractality peaks at intermediate noise intensities, (ii) the conditions for peak multifractality produce a complex network whose node degree distribution obeys an inverse power-law scaling with an exponent of 2 < ? < 3, indicating scale-free topology and (iii) the Hurst exponent and the global clustering coefficient can serve as early warning indicators of global instability under specific operating and forcing conditions. By characterising the noise-induced dynamics of a canonical shear flow, we demonstrate that the multifractal and scale-free network dynamics commonly observed in turbulent flows can also be observed in laminar flows under certain stochastic forcing conditions. |
| Keywords | |
| URL | [Source Record] |
| Indexed By | |
| Language | English
|
| SUSTech Authorship | Others
|
| Funding Project | Research Grants Council of Hong Kong["16200220","16215521"]
; PolyU Start-up Fund[P0043562]
|
| WOS Research Area | Mechanics
; Physics
|
| WOS Subject | Mechanics
; Physics, Fluids & Plasmas
|
| WOS Accession No | WOS:001073533000001
|
| Publisher | |
| ESI Research Field | ENGINEERING
|
| Data Source | Web of Science
|
| Citation statistics |
Cited Times [WOS]:0
|
| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/575819 |
| Department | Department of Mechanics and Aerospace Engineering |
| Affiliation | 1.Hong Kong Polytech Univ, Dept Aeronaut & Aviat Engn, Kowloon, Hong Kong, Peoples R China 2.Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Clear Water Bay, Hong Kong, Peoples R China 3.Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA 22904 USA 4.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Guangdong Prov Key Lab Turbulence Res & Applicat, Shenzhen, Peoples R China 5.Southern Univ Sci & Technol, Guangdong Hong Kong Macao Joint Lab Data Driven Fl, Shenzhen, Peoples R China 6.Hong Kong Univ Sci & Technol, Guangdong Hong Kong Macao Joint Lab Data Driven Fl, Clear Water Bay, Hong Kong, Peoples R China |
| Recommended Citation GB/T 7714 |
Guan, Yu,Zhu, Yuanhang,Yang, Zhijian,et al. Multifractality and scale-free network topology in a noise-perturbed laminar jet[J]. JOURNAL OF FLUID MECHANICS,2023,972.
|
| APA |
Guan, Yu,Zhu, Yuanhang,Yang, Zhijian,Yin, Bo,Gupta, Vikrant,&Li, Larry K. B..(2023).Multifractality and scale-free network topology in a noise-perturbed laminar jet.JOURNAL OF FLUID MECHANICS,972.
|
| MLA |
Guan, Yu,et al."Multifractality and scale-free network topology in a noise-perturbed laminar jet".JOURNAL OF FLUID MECHANICS 972(2023).
|
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