湍流边界层均匀动量区统计分形特性的PIV 实验研究

陈怡纯, 田海平, 马国祯, 陈纪仲 - 力学学报, 2024 - lxxb.cstam.org.cn
均匀动量区(UMZs) 作为动量相近的局部区域成为新的湍流拟序结构成员,
研究其统计特性与变化规律, 分析其成因和研究其与其他湍流结构的内在关联 …

Self-similarity and vanishing diffusion in fluvial landscapes

SK Anand, MB Bertagni, TD Drivas… - Proceedings of the …, 2023 - National Acad Sciences
Complex topographies exhibit universal properties when fluvial erosion dominates
landscape evolution over other geomorphological processes. Similarly, we show that the …

The effect of turbulent motions on particle spatial distribution in high-Reynolds-number particle-laden flows

X He, H Liu - Journal of Fluid Mechanics, 2023 - cambridge.org
The spatial relationship between turbulent and particle concentration structures is
investigated based on the turbulent velocity and particle concentration data obtained …

Turbulence organization and mean profile shapes in the stably stratified boundary layer: zones of uniform momentum and air temperature

M Heisel, PP Sullivan, GG Katul… - Boundary-Layer …, 2023 - Springer
A persistent spatial organization of eddies is identified in the lowest portion of the stably
stratified planetary boundary layer. The analysis uses flow realizations from published large …

PIV experimental study on statistical fractal characteristics of uniform momentum zones in turbulent boundary layer

C Yichun, T Haiping, M Guozhen… - Chinese Journal of …, 2024 - lxxb.cstam.org.cn
Uniform momentum zones (UMZs), as local regions with similar momentum, become a new
member of turbulent coherent structures. To study statistical characteristics, variation rules …

Revisiting “bursts” in wall-bounded turbulent flows

S Chowdhuri, T Banerjee - Physical Review Fluids, 2023 - APS
Turbulent signals are known to exhibit burstlike activities, which affect the turbulence
statistics at both large and small scales of the flow. In our study, we pursue this problem from …

Level crossings reveal organized coherent structures in a turbulent time series

S Chowdhuri, T Banerjee - Physical Review Fluids, 2024 - APS
In turbulent flows, energy production is associated with highly organized structures, known
as coherent structures. Since these structures are three dimensional, their detection remains …

Stochastic modal velocity field in rough-wall turbulence

R Ehsani, M Heisel, M Puccioni, J Hong… - Journal of Fluid …, 2024 - cambridge.org
Stochastically generated instantaneous velocity profiles are used to reproduce the outer
region of rough-wall turbulent boundary layers in a range of Reynolds numbers extending …

Representing the form and formation of Earth's topography under natural and anthropogenic drivers

SK Anand - 2023 - search.proquest.com
While the Earth's topography may appear static at a casual glance, it is continuously shaped
by diverse geomorphic processes operating across various spatial and temporal scales …