Results 81 to 90 of about 736,626 (345)

Turbulence Intensity Scaling: A Fugue

, 2019
We study streamwise turbulence intensity definitions using smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. Scaling of turbulence intensity with the bulk (and friction) Reynolds number is provided for the definitions.
Basse, Nils T.
core   +1 more source

Universal Features of Turbulent/Non-turbulent and Turbulent/Turbulent Interfaces

AbstractThe characteristics of turbulent/non-turbulent interfaces and turbulent/turbulent interfaces (TNTI and TTI) are analysed by new carefully designed direct numerical simulations (DNS). Whereas TNTIs separate the turbulent from the non-turbulent region in free shear flows and turbulent boundary layers, TTIs appear whenever two regions of distinct ...
Pedro D. Alves, Marco Zecchetto, Ricardo P. Xavier, Oliver Buxton, Carlos B. da Silva   +4 more
openaire   +1 more source

Reinforced Concrete‐Inspired Multiscale Hierarchical Metamaterial Composite for Synergistic Enhancement Across Thermal, Electromagnetic, and Mechanical Domains

Advanced Functional Materials, EarlyView.
A structurally integrated multiscale hierarchical metamaterial composite (MHMC), inspired by the synergistic architecture of reinforced concrete, achieves simultaneous enhancement of thermal, electromagnetic, and mechanical functionalities. By combining a carbon black‐based mechanical metamaterial with a porosity‐graded cellulose acetate aerogel, this ...
Jeongwoo Lee, Junyeol Choi, Junyong Seo, Jaemin Lee, Dowon Noh, Hoyoung Jang, Hwanju Lim, Jinwoo Park, Run Hu, Wonjoon Choi   +9 more
wiley   +1 more source

On two distinct Reynolds number regimes of a turbulent square jet

Theoretical and Applied Mechanics Letters, 2015
The effects of Reynolds number on both large-scale and small-scale turbulence properties are investigated in a square jet issuing from a square pipe. The detailed velocity fields were measured at five different exit Reynolds numbers of 8×103≤Re≤5×104. It
Minyi Xu, Jianpeng Zhang, Pengfei Li, Jianchun Mi   +3 more
doaj   +1 more source

Cluster Formation in Protostellar Outflow-Driven Turbulence

, 2005
Most, perhaps all, stars go through a phase of vigorous outflow during formation. We examine, through 3D MHD simulation, the effects of protostellar outflows on cluster formation.
Bontemps S., Fumitaka Nakamura, Knee L. B. G., Motte F., Zhi-Yun Li   +4 more
core   +1 more source

Turbulent rivers [PDF]

Quarterly of Applied Mathematics, 2008
The existence of solutions describing the turbulent flow in rivers is proven. The existence of an associated invariant measure describing the statistical properties of this one-dimensional turbulence is established. The turbulent solutions are not smooth but Hölder continuous with exponent 3 / 4 3/4
openaire   +3 more sources

Biomimetic Ion‐Orchestrated Hierarchical Armored Hydrogel Coating for Robust and Multifunctional Surface Protection

Advanced Functional Materials, EarlyView.
Inspired by the skin‐toughening mechanism of marine sponges, an ion‐orchestrated structural engineering strategy is proposed to regulate the surface microstructure of hydrogel coatings, enabling the in situ formation of a robust armor layer that enhances mechanical integrity and provides multifunctional protection by suppressing fouling attachment and ...
Wenshuai Yang, Ziqian Zhao, Weiyan Zhu, Lu Gong, Yongxiang Sun, Haoyu Yang, Ling Zhang, Wenfei Zhang, Hao Zhang, Fang Zhou, Xuwen Peng, Hongbo Zeng   +11 more
wiley   +1 more source

Octopus-Inspired Underwater Soft Robotic Gripper with Crawling and Swimming Capabilities

Research
Can a robotic gripper only operate when attached to a robotic arm? The application space of the traditional gripper is limited by the robotic arm. Giving robot grippers the ability to move will expand their range of applications.
Mingxin Wu, Waqar Hussain Afridi, Jiaxi Wu, Rahdar Hussain Afridi, Kaiwei Wang, Xingwen Zheng, Chen Wang, Guangming Xie   +7 more
doaj   +1 more source

Evidence of Critical Balance in Kinetic Alfven Wave Turbulence Simulations

, 2011
A numerical simulation of kinetic plasma turbulence is performed to assess the applicability of critical balance to kinetic, dissipation scale turbulence. The analysis is performed in the frequency domain to obviate complications inherent in performing a
G. G. Howes, Iroshnikov R. S., J. M. TenBarge   +2 more
core   +1 more source

On turbulent mixing [PDF]

Symposium - International Astronomical Union, 1984
Several authors (myself included!) have suggested that turbulent mixing takes place in some, if not all, stars, and in particular that such mixing can explain the low solar neutrino flux. This turbulence is thought to be caused by differential rotation produced by braking due to angular momentum loss in a stellar wind, and/or to the effect of ...
openaire   +1 more source