Numerical Investigation of Fixed and Non-fixed Separation with Shear Layer Adapted Delayed Detached Eddy Simulation
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Aeronautical and Space Sciences"
DOI: 10.1007/s42405-020-00342-y
Abstract: Delayed detached eddy simulation (DDES) has been proved to be suitable for the numerical simulation of massively separated flow. Whereas, there are still some drawbacks in the treatment of gray area, which is the transition… read more here.
Keywords: separation; delayed detached; shear layer; layer ... See more keywords
Numerical and experimental investigation of the geometrical scale effect on a confined subsonic-supersonic shear layer
Sign Up to like & getrecommendations! Published in 2020 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2020.04.044
Abstract: Abstract The evolution characteristics of confined subsonic-supersonic shear layers have been investigated experimentally employing the schlieren system and numerically using the large eddy simulation (LES) method under different geometrical scales, including the height of combustion… read more here.
Keywords: shear layer; supersonic shear; layer; confined subsonic ... See more keywords
Experimental study on evolution characteristics of plane subsonic-supersonic shear layer
Sign Up to like & getrecommendations! Published in 2020 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2020.105791
Abstract: Abstract The study of plane subsonic-supersonic shear layer formed by the subsonic ramjet air and the supersonic rocket jet in the rocket based combined cycle is of profound significance for analyzing the mixing characteristics in… read more here.
Keywords: shear layer; pressure; supersonic shear; layer ... See more keywords
Premixed jet flame behavior in a hot vitiated crossflow of lean combustion products
Sign Up to like & getrecommendations! Published in 2017 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2016.11.014
Abstract: Abstract Improvement in NO x emissions from gas turbine combustors requires development of safe and reliable lean-premixed combustion systems. In this paper, the flame stabilization behavior of a premixed ethylene–air jet injected normal to a… read more here.
Keywords: shear layer; flame; hot vitiated; jet ... See more keywords
Thermal mixing in T-junctions with different incident angle of branch pipe
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2021.121834
Abstract: Abstract In this paper, a detailed study of mixing characteristics and temperature fluctuations in T-junctions of 90° and 45° is carried out based on visualization experiments and Large Eddy Simulations (LES). In this study, both… read more here.
Keywords: branch; quasi karman; vortex series; shear layer ... See more keywords
Pollutant fluxes in two-dimensional street canyons
Sign Up to like & getrecommendations! Published in 2018 at "urban climate"
DOI: 10.1016/j.uclim.2018.02.002
Abstract: Abstract The turbulent dispersion of a passive tracer emitted by a line source simulating vehicular traffic in an idealized urban canyon in neutral conditions is studied in the water channel by means of simultaneous measurements… read more here.
Keywords: shear layer; canyon top; canyon; two dimensional ... See more keywords
Scaling of square-prism shear layers
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2018.443
Abstract: Scaling characteristics, essential to the mechanisms of transition in square-prism shear layers, were explored experimentally. In particular, the evolution of the dominant instability modes as a function of Reynolds number were reported in the range… read more here.
Keywords: shear layer; frequency; layer; shear layers ... See more keywords
Inverse cascade suppression and shear-layer formation in magnetohydrodynamic turbulence subject to a guide field and misaligned rotation
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2021.968
Abstract: Astrophysical flows are often subject to both rotation and large-scale background magnetic fields. Individually, each is known to two-dimensionalize the flow in the perpendicular plane. In realistic settings, both of these effects are simultaneously present… read more here.
Keywords: field; rotation; guide field; magnetohydrodynamic turbulence ... See more keywords
Unsteady characteristics of compressible reattaching shear layers
Sign Up to like & getrecommendations! Published in 2020 at "Physics of Fluids"
DOI: 10.1063/5.0008752
Abstract: Compressible reattaching flows occur in many aerospace applications and are characterized by high aerothermal loads at reattachment and a broad range of characteristic time scales. The flowfield in this study involves a separated shear layer… read more here.
Keywords: shear layer; reattachment; recirculation zone; compressible reattaching ... See more keywords
Mechanisms of jet instability: role of deceleration
Sign Up to like & getrecommendations! Published in 2018 at "Fluid Dynamics Research"
DOI: 10.1088/1873-7005/aab0fc
Abstract: This paper shows that decrease of velocity magnitude downstream enhances the shear-layer instability in jetlike single- and two-fluid flows. This feature has not been recognized in stability studies, performed in the parallel and quasi-parallel flow… read more here.
Keywords: shear layer; instability; jet; instability develops ... See more keywords
Pressure oscillation suppression and mode transition for supersonic cavity flows controlled by upstream mass injections
Sign Up to like & getrecommendations! Published in 2023 at "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering"
DOI: 10.1177/09544100221110655
Abstract: Direct numerical simulations were performed to investigate an active control strategy for supersonic (Mach 1.8 and 2.2) flows past a rectangle cavity with a length-to-depth ratio of 4. A steady mass injection is applied upstream… read more here.
Keywords: cavity; layer; pressure; shear layer ... See more keywords