Measured vortex ring core vorticity profiles
Transition of a vortex ring measured by 3D scanning Tomo-PIV
... axial vorticity component in the median plane is first shown, see the contours of ω z in figure ...axial vorticity component is important because the secondary vortices are most evident in axial ...the ...
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Tracking a Tip Vortex with Adaptive Vorticity Confinement and Hybrid RANS LES
... adaptive Vorticity Confinement (VC) method targets to counteract one part of the discretisation error: the one due to the discretisation of the convection ...inside vortex cores which is a typical ...
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Wake structure and kinematics in the vortex ring state
... instantaneous vorticity field (right) of a hovering, single-bladed ...the vorticity field is shown (left) as contours of downward flow velocity normalized by the mean rotor inflow, λ h ...of ...
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Transition of A Vortex Ring Visualized by 3D Scanning TomoPIV
... axial vorticity component in the median plane is first shown, see the contours of ω z in figure ...axial vorticity component is important because the secondary vortices are most evident in axial ...the ...
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Sound generation by the interaction of a vortex ring with a rigid sphere
... a vortex ring and a stationary rigid sphere are computed using two Lagrangian particle ...slender vortex filament scheme which tracks the motion of the filament ...the vorticity distribution ...
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Helium-filled soap bubbles for vortex core velocimetry
... field, measured with micro-size droplets and HFSB, are separately shown in ...expected ring shape and an annular region of maximum is observed at a radial distance of approximately ...the vortex ...
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The Ring Vortex: Concepts for a Novel Complex Flow Phantom for Medical Imaging
... the Ring Vortex? The ring vortex is a fundamental component of flow complexity and consists of an annular vortex core that propagates perpendicular to the plane of the ...
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The Ring Vortex: Concepts for a Novel Complex Flow Phantom for Medical Imaging
... the Ring Vortex? The ring vortex is a fundamental component of flow complexity and consists of an annular vortex core that propagates perpendicular to the plane of the ...
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Relationship between vortex ring in tail fin wake and propulsive force
... (2002) measured the flow field around the tail fin of a swimming mackerel from various directions using PIV and predicted the structure of the continuous vortex rings formed in the fin wake from the ...
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Comparison of Computed and Measured Vortex Evolution for a UH-60A Rotor in Forward Flight
... and measured vortex characteristics, a single instantaneous CFD velocity field was processed using the same procedure used for the measurements, as described in ...the measured ensemble averaged ...
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4D visualization study of a vortex ring life cycle using modal analyses
... creasing magnitude continuously counter-acting against mode 0 thus the sum of both (both POD patterns are of similar structure, see above) decreases in energy so that the remaining most domi- nant mode is then no. 2, ...
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Optimal transient growth on a vortex ring and its transition via cascade of ringlets
... a vortex ring up to Reynolds number ( ≡ circulation/viscosity) Re = 27 000 are ...the ring axis undergo the strongest linear transient growth and lead to secondary structures in the form of ringlets, ...
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A New Parametric Model of Vortex Tangential-Wind Profiles: Development, Testing, and Verification
... of vortex tangential-wind profiles is presented that is primarily designed to depict realistic-looking tangential wind profiles such as those in intense atmospheric vortices arising in dust devils, ...
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The role of vortex ring formation and pressure drop on dynamics of the left ventricle during diastole
... we measured annulus recoil force for different mitral valve sizes, while applying exponential pressure decay programs in the ventricular ...The vorticity plot was also obtained when the maximal recoil force ...
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Vorticity budget of a tornado-like vortex
... the vorticity budget of a tornado-like vortex by measuring vertical and horizontal circulations of ...tornado-like vortex, their circulation is quite ...vertical vorticity concentrated at the ...
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A constrained vortex model with relevance to helicopter vortex ring state
... 1000 vortex pairs and using N = 20 ...each vortex, even though the left-hand column of vortices are simply mirror images of the right hand ...the vortex ring ...the vortex spacing ...
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The Taylor Vortex and the Driven Cavity Problems in the Stream Function-Vorticity Formulation
... Abstract: In this work, two problems will be presented: The Taylor Vortex problem and the Driven Cavity problem. Both problems are solved using the Stream function-Vorticity formulation of the Navier-Stokes ...
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Vortex-ring-fractal Structure of Hydrogen Atom
... a vortex-ring- fractal theory ...the vortex-ring-fractal modeling of elements in the Mendeleev’s periodic table, which is not in contradiction to the known laws of ...a ...
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Predicting blade vortex interaction, airloads and acoustics using the vorticity transport model
... similar vorticity contours for the minimum noise ...tally measured positions of the vortex ...in vortex cores that lie slightly higher than those measured ...twin vortex ...
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Vortex-ring Modeling of Complex Systems and Mendeleev’s Table
... a vortex-fractal theory ...the vortex-fractal modeling of vortex-ring fractal structure of atoms, molecules, and a creation of elements in the Mendeleev’s periodic table with ...
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