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Construction of the vortex-surface field from tomographic particle image velocimetry data of flow past a vortex generator
We extend the vortex-surface field (VSF), a Lagrangian-based flow diagnostic method, to experimental data of the tomographic particle image...
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Vortex analysis of water flow through gates by different vortex identification methods
The pre-gate suction vortex, gate-bottom-edge transverse vortex, gate-slot vertical vortex, and downstream-of-gate return vortex are important...
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A numerical analysis of the instability in the Taylor Vortex flow by using the visualization of attractors
AbstractThis study clarifies the critical values of bifurcations from a steady Taylor flow into a wavy Taylor flow by a numerical analysis applying...
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High-speed volumetric particle tracking measurements of unstable helical vortex pairs
We present results from an experimental study investigating pairs of helical vortices generated by a one-bladed rotor in hovering conditions....
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Linear stability of a counter-rotating vortex pair approaching an inviscid wall
AbstractThe influence of an inviscid planar wall on the temporal development of the long-wavelength instability of a trailing vortex pair is...
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Vortex Ring Formation Following Shock Wave Diffraction in Low-Pressure Environments
Compressible vortex rings have been widely investigated for decades under ambient atmospheric conditions, and understanding this transient phenomenon...
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Fractal dimensions in fluid dynamics and their effects on the Rayleigh problem, the Burger's Vortex and the Kelvin–Helmholtz instability
In this article, we construct fluid equations in fractal dimensions based on the concept of the product-like fractal measure introduced by Li and...
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Breaking the Aircraft Vortex Wake Near the Ground: Mitigation of Turbulence Wake Hazard
Vortex hazard is one of the dangers that aircraft must avoid. The trailing vortices in ground proximity can maintain their strength for a long-time...
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Leading edge vortex dynamics on finite aspect ratio swept wings exhibiting large amplitude oscillations
Stall flutter, a fluid–structural interaction driven by dynamic stall, has primarily been studied as a two-dimensional flow phenomenon. However,...
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Upper part-load instability in a reduced-scale Francis turbine: an experimental study
Francis turbines with medium or high specific speeds may experience a particular type of instability in the upper part load in which the precessing...
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Experimental investigation of blade tip vortex behavior in the wake of asymmetric rotors
Wakes behind rotors such as wind turbines, propellers, and helicopters can have detrimental effects on downstream structures including increased...
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Vortex dynamics of axisymmetric cones at high angles of attack
AbstractVortex asymmetry, dynamics, and breakdown in the wake of an axisymmetric cone have been investigated using direct numerical simulation for a...
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Flow-Excited Instability in Thin Structure Aeroelasticity
This chapter examines the coupled dynamics of three-dimensional flexible thin structures with membrane-like (of small bending rigidity) components at...
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Characterization of vortex structures with self-excited oscillations based on Liutex-Omega vortex identification method
The self-excited oscillation effect produces a continuous periodic pulsation without an external excitation source. It is widely used in fluid heat...
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Experimental evidence for the mechanism of subcritical vortex-induced vibration
The vortex-induced vibration (VIV) of circle cylinder can occur at subcritical Reynolds numbers as low as 20, which is called subcritical VIV. Recent...
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Investigation of vortex dynamics diagnosis in the stall state of mixed-flow pump with blade gap size effect
Rotating stall always occurs in the mixed-flow pump operating at partial load condition, not merely affecting the unit efficiency, but also...
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Probing dynamics of elliptical vortex rings via direct vorticity measurements with digital inline holography
Investigating vorticity dynamics provides an effective way for understanding the fundamental mechanisms of fluid flows across diverse scales....
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The Electro-Elastic Instability of Viscoelastic Fluid in a Microchannel with Obstacles Under Heterogeneous Surface Potential
In this paper, the Electro-elastic instability(EEI) of an Oldroyd-B fluids flow the microchannel with the obstacles and heterogenous surface charged...
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Reynolds number effect on in-line vortex-induced vibration (VIVx) of a circular cylinder for wider reduced velocity range
Pure in-line vortex-induced vibrations (VIVx) of a circular cylinder are studied experimentally for different Reynolds number ranges. The experiments...
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Vortex dynamics in two-dimensional periodic shear layers
In this work, the doubly periodic shear layers are employed to underpin the vortex dynamics associated with the perturbed free shear layers using the...
