Topology of vortex breakdown in closed polygonal containers
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.211
Abstract: The topology of vortex breakdown in the confined flow generated by a rotating lid in a closed container with a polygonal cross-section geometry has been analysed experimentally and numerically for different height/radius aspect ratios $h$… read more here.
Keywords: topology; geometry; vortex breakdown; cross section ... See more keywords
Vortex breakdown, linear global instability and sensitivity of pipe bifurcation flows
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.49
Abstract: Pipe bifurcations are common flow configurations in both natural and man-made systems. This study follows our previous report (Chen et al., Phys. Fluids, vol. 27, 2015, 034107) by describing three aspects of flows through junction… read more here.
Keywords: base flow; sensitivity; junction; vortex breakdown ... See more keywords
Streamwise vortex breakdown in supersonic flows
Sign Up to like & getrecommendations! Published in 2017 at "Physics of Fluids"
DOI: 10.1063/1.4982901
Abstract: Transition processes in supersonic streamwise vortices with wake flows are numerically simulated for Mach numbers from 1.5 to 5.0. This paper discusses the effect of an axial velocity deficit on the breakdown for a fixed… read more here.
Keywords: breakdown supersonic; supersonic flows; mach; breakdown ... See more keywords
Numerical analysis of the flow pattern and vortex breakdown over a pitching delta wing at supersonic speeds
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Mechanics and Technical Physics"
DOI: 10.1134/s0021894417030038
Abstract: A supersonic compressible flow over a 60° swept delta wing with a sharp leading edge undergoing pitching oscillations is computationally studied. Numerical simulations are performed by the finite volume method with the use of the… read more here.
Keywords: numerical analysis; flow pattern; delta wing; vortex breakdown ... See more keywords
Effects of blade rotation on axial turbine tip leakage vortex breakdown and loss
Sign Up to like & getrecommendations! Published in 2017 at "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering"
DOI: 10.1177/0954410016656879
Abstract: The tip leakage vortex breakdown occurs under a few conditions in modern turbines, which leads to extra vortex breakdown losses, but the mechanisms of vortex breakdown and its influencing factors still remain unclear. This paper… read more here.
Keywords: tip leakage; blade rotation; leakage vortex; vortex breakdown ... See more keywords
Computational Investigation of Vortex Breakdown over a Pitching Delta Wing at Supersonic Speeds
Sign Up to like & getrecommendations! Published in 2017 at "Scientia Iranica"
DOI: 10.24200/sci.2017.4246
Abstract: Vortex breakdown in compressible flows over a 60-degrees sweep delta wing with a sharp leading edge undergoing pitching oscillations is computationally studied. Emphasis in this study is on possible supersonic vortex breakdown for pitching motion… read more here.
Keywords: investigation vortex; breakdown pitching; pitching delta; computational investigation ... See more keywords
Sub- and Transonic Vortex Breakdown Flight Condition Simulations of the F-16XL Aircraft
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Aircraft"
DOI: 10.2514/1.c033246
Abstract: Free-flight Navier–Stokes simulations of the Cranked Arrow Wing Aerodynamics Project International F-16XL aircraft were performed to probe for the complex vortex flowfield structures at high angle of attack close to and beyond vortex breakdown conditions.… read more here.
Keywords: sub transonic; 16xl aircraft; flight; vortex breakdown ... See more keywords
Vortex Breakdown Control by the Plasma Swirl Injector
Sign Up to like & getrecommendations! Published in 2021 at "Applied Sciences"
DOI: 10.3390/app11125537
Abstract: Vortex breakdown, observed in swirling flows, is an interesting physical phenomenon relevant to a wide range of engineering applications, including aerodynamics and combustion. The concept of using a plasma swirler to control vortex breakdown was… read more here.
Keywords: vortex breakdown; plasma swirl; control; swirl injector ... See more keywords