Crossflow effects on shock wave/turbulent boundary layer interactions
Sign Up to like & getrecommendations! Published in 2021 at "Theoretical and Computational Fluid Dynamics"
DOI: 10.1007/s00162-021-00574-y
Abstract: The effects of crossflow on the interaction between an impinging shock wave and a high-speed turbulent boundary layer are investigated using direct numerical simulations of statistically two-dimensional, three-component flow. The leading-order effect of crossflow is… read more here.
Keywords: layer; boundary layer; shock wave; turbulent boundary ... See more keywords
Bubbly drag reduction accompanied by void wave generation inside turbulent boundary layers
Sign Up to like & getrecommendations! Published in 2018 at "Experiments in Fluids"
DOI: 10.1007/s00348-018-2621-1
Abstract: Frictional drag reduction, a technique by which bubbles are injected into the turbulent boundary layer surrounding the hull of a marine vessel, is now at the stage of practical applications. In achieving drag reduction, void… read more here.
Keywords: reduction; void waves; void wave; turbulent boundary ... See more keywords
Experimental Control of Turbulent Boundary Layers with In-plane Travelling Waves
Sign Up to like & getrecommendations! Published in 2018 at "Flow, Turbulence and Combustion"
DOI: 10.1007/s10494-018-9926-2
Abstract: The experimental control of turbulent boundary layers using streamwise travelling waves of spanwise wall velocity, produced using a novel active surface, is outlined in this paper. The innovative surface comprises a pneumatically actuated compliant structure… read more here.
Keywords: control turbulent; experimental control; boundary layers; surface ... See more keywords
Liutex similarity in turbulent boundary layer
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Hydrodynamics"
DOI: 10.1007/s42241-019-0094-1
Abstract: Kolmogorov’s 1941 theory (K41) of similarity hypotheses and the −5/3 law for energy spectrum are considered as the most important theoretical achievement in turbulence research and the success of the modern turbulence theory. The assumptions… read more here.
Keywords: similarity; reynolds number; turbulence; liutex similarity ... See more keywords
Effect of drag reducing riblet surface on coherent structure in turbulent boundary layer
Sign Up to like & getrecommendations! Published in 2019 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2019.04.023
Abstract: The characteristics of turbulent boundary layer over streamwise aligned drag reducing riblet surface under zero-pressure gradient are investigated using particle image velocimetry. The formation and distribution of large-scale coherent structures and their effect on momentum… read more here.
Keywords: boundary layer; turbulent boundary; riblet surface; surface ... See more keywords
Direct numerical simulation of impinging shock wave and turbulent boundary layer interaction over a wavy-wall
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2020.10.016
Abstract: Abstract The interaction of an impinging oblique shock wave with an angle of 30° and a supersonic turbulent boundary layer at Ma∞=2.9 and Reθ = 2400 over a wavy-wall is investigated through direct numerical simulation and compared… read more here.
Keywords: wavy wall; interaction; turbulent boundary; layer ... See more keywords
Direct numerical simulation of turbulent boundary layer premixed combustion under auto-ignitive conditions
Sign Up to like & getrecommendations! Published in 2021 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2021.02.005
Abstract: Abstract In the present work, premixed combustion in a turbulent boundary layer under auto-ignitive conditions is investigated using direct numerical simulation (DNS). The turbulent inflow of the reactive DNS is obtained by temporal sampling of… read more here.
Keywords: boundary layer; turbulent boundary; auto; combustion ... See more keywords
Effects of the roughness height in turbulent boundary layers over rod- and cuboid-roughened walls
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2020.108644
Abstract: Abstract Direct numerical simulations (DNSs) of spatially developing turbulent boundary layers (TBLs) over two-dimensional (2D) rod-roughened walls and three-dimensional (3D) cuboid-roughened walls are conducted to investigate the effects of the roughness height on the flow… read more here.
Keywords: roughened walls; cuboid; roughness height; rod cuboid ... See more keywords
The influence of wall heating on turbulent boundary layer characteristics during mixed convection
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2021.108839
Abstract: Abstract An investigation on the modification of turbulent boundary layer characteristics by wall heating was conducted on the mixed convection turbulent boundary layer flow. The multi-plane particle image velocimetry (PIV) technique was used to characterize… read more here.
Keywords: wall heating; boundary layer; turbulent boundary; mixed convection ... See more keywords
Direct numerical simulation of turbulent boundary layer over a compliant wall
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluids and Structures"
DOI: 10.1016/j.jfluidstructs.2017.03.005
Abstract: Abstract The performance of compliant wall with different parameters in a spatially developing turbulent boundary layer is investigated by direct numerical simulation. The Reynolds number based on the external flow velocity and the momentum thickness… read more here.
Keywords: compliant wall; wall; boundary layer; turbulent boundary ... See more keywords
Modeling vibrating panels excited by a non-homogeneous turbulent boundary layer
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Fluids and Structures"
DOI: 10.1016/j.jfluidstructs.2021.103378
Abstract: Abstract Predicting the vibration response of an elastic structure excited by a turbulent flow is of interest for the civil and military transportation sector. The models proposed in the literature are generally based on the… read more here.
Keywords: tbl; area; non homogeneous; boundary layer ... See more keywords