Characteristics and mechanism of mixing enhancement for noncircular synthetic jets at low Reynolds number
Sign Up to like & getrecommendations! Published in 2018 at "Experimental Thermal and Fluid Science"
DOI: 10.1016/j.expthermflusci.2018.06.021
Abstract: Abstract In this paper, the evolution of the flow structures and the mixing characteristics in low-aspect-ratio (AR) noncircular incompressible synthetic jets are investigated. Two elongated configurations, elliptic and rectangular orifices with AR = 3 and 5 are… read more here.
Keywords: synthetic jets; reynolds number; streamwise; streamwise vortices ... See more keywords
Collapse of transitional wall turbulence captured using a rare events algorithm
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2021.957
Abstract: Abstract This text presents one of the first successful applications of a rare events sampling method for the study of multistability in a turbulent flow without stochastic energy injection. The trajectories of collapse of turbulence… read more here.
Keywords: system; transitional wall; turbulence; streamwise ... See more keywords
Large-scale turbulence structures in a laboratory-scale boundary layer under steady and gusty wind inflows
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-45873-x
Abstract: Experiments on turbulence structures and features of a wind field under steady inflow and gusty wind inflows were implemented in a straight-through wind tunnel. Streamwise and wall-normal velocity components were measured using a streamline constant… read more here.
Keywords: wind; wall normal; gusty wind; streamwise ... See more keywords
Letter: The effects of streamwise system rotation on pressure fluctuations in a turbulent channel flow
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Fluids"
DOI: 10.1063/1.5048800
Abstract: In this letter, we report the modulating effects of streamwise system rotation on both the amplitude and the wavenumber of pressure fluctuations in a plane channel flow. The analysis of the pressure field is conducted… read more here.
Keywords: rotation; streamwise; pressure fluctuations; pressure ... See more keywords
Influence of streamwise and spanwise wall magnet arrays on near-wall MHD turbulence
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Turbulence"
DOI: 10.1080/14685248.2023.2203497
Abstract: ABSTRACT The effect of a permanent, localised and non-uniform magnetic field on the near-wall turbulence in a fully developed channel flow is analysed through direct numerical simulations. The magnetic field distribution is obtained by an… read more here.
Keywords: wall; near wall; turbulence; magnetic field ... See more keywords
A statistical state dynamics approach to wall turbulence
Sign Up to like & getrecommendations! Published in 2017 at "Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences"
DOI: 10.1098/rsta.2016.0081
Abstract: This paper reviews results obtained using statistical state dynamics (SSD) that demonstrate the benefits of adopting this perspective for understanding turbulence in wall-bounded shear flows. The SSD approach used in this work employs a second-order… read more here.
Keywords: mean flow; statistical state; turbulence; streamwise ... See more keywords
On the Mechanism of Drag Reduction in Fully-Developed Turbulent Channel Flow with a Streamwise Micro-featured Superhydrophobic Wall
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Fluid Mechanics"
DOI: 10.18869/acadpub.jafm.73.242.27724
Abstract: The superhydrophobic drag reduction changes the structures of turbulent flow. However, the underlying mechanism is not clear. The aim of this study is to determine the alternations of turbulent flow due to applying a streamwise… read more here.
Keywords: micro featured; wall; streamwise; micro ... See more keywords