vortex flows
Converging photospheric vortex flows close to the polarity inversion line of a fully emerged active region
... first look for the presence of critical points, using a linear ap- proximation of the flow field, and classify them according to the eigenvalues of the Jacobian matrix of the linear transfor- mation. Then, we sort a ...
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Singular modes in Rayleigh instability of three-dimensional streamwise-vortex flows
... in vortex flows will most certainly require further computational work for the full equation ...realistic vortex velocity field itself, as also noted independently by Goldstein & Wundrow ...the ...
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Finite-dimensional description of non-newtonian vortex flows
... non-Newtonian vortex ow indicates the presence of complex temporal dynamics that is attributed to shear thinning and normal stress (giving rise to the so-called Weissenberg rod climbing ...secondary vortex ...
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Vortex flows in the solar atmoshpere: automated identification and statistical analysis
... First, vortex flows, and any type of feature tracking in observations, are time consuming and error prone when performed ...for vortex identification (Haller et al. 2016), initially employed in vortex ...
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A study of the non linear dynamics of vortex flows by numerical methods
... A hydroQynamic fluid which is incompressible, inviscid and homogeneous is not entirely realistic in a physical sense, but it is mathematically convenient for two reasons; firstly because[r] ...
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Three-dimensional vortex flows in distorted pipes: Theory and computation
... the vortex-like flow betw een the inlet and fully-developed state downstream for both the curved and cornered cases; these require very careful com putation as the starting behaviour is irregular, especially for ...
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Steady vortex flows obtained from a constrained variational problem
... We prove the existence of steady two-dimensional ideal vortex flows occupying the first quadrant and containing a bounded vortex; this is done by solving a constrained variational problem. Kinetic energy is ...
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From primary instabilities to secondary instabilities in Görtler vortex flows
... layer flows over concave walls and other near-wall flows having curved ...incompressible flows, the linear evolution of Görtler vortices have become well known [1–3] while recep- tivity and breakdown ...
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Steady vortex flows obtained from a nonlinear eigenvalue problem
... of vortex regions occur. These are “attached” vortices in which the vortex region is connected to the boundary, “isolated” vortices in which the vortex region stands away from the boundary, and ...
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On Stable Plane Vortex Flows of an Ideal Fluid
... similar vortex mushrooms originating (after impact) and resembling that usually produced with breakers crossing sand bars off the shore when the water has to travel back out to sea through a gap in the sand bar, ...
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Ergodicity and spectral cascades in point vortex flows on the sphere
... point vortex kinetic energy spectra at small scales, increasing the system energy preferentially increases the kinetic energy content at the largest allowable ...point vortex dynamics, at least on the ...
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High Reynolds number vortex flows: Vortex/Rayleigh wave interaction and the compressible leading-edge vortex
... the vortex fiow develops d o w n stream ^ The 2-D infiection point condition is eroded as the three-dim ensionality of the vortex flow gradually develops downstream b ut the neutrality of the Rayleigh wave ...
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Numerical Simulation of Vortex Flows in Cylindrical Geometries
... These figures shows axial vortex breakdown close to the upper portion near the top rotating end wall. The axial vortex breakdown is also clear from figures 3 and 5. The contour plot of x and z components of ...
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Dust devil dynamics
... moved by the wind, bouncing along the surface against the force of gravity. The collisions between the larger and smaller bouncing particles gives the smaller particles a negative charge. There is a complex interplay ...
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Modelling of stationary three-dimensional separated air flows around an Ahmed reference model
... Abstract: When analysing the topology of turbulent flow systems for alternative vehicle configurations, conventional wind-tunnel tests may not be sufficient. Vehicle development teams investigating this kind of physical ...
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Simulation of three-dimensional internal flows by the random vortex and boundary element methods
... Figure 4 depicts the side view of the instantaneous position and velocity of the vortex elements within a slice of volume with thickness 0.15 and plane of symmetry which passes through the plane of symmetry of the ...
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Modification of air flows within an industrial carcass chiller using delta wing vortex generators
... Table E 13: Fully loaded chiller with delta wings set at 25 degrees in second configuration - Air speed data for trial 2 Breed type loaded: Red deer Vertical Height in chill er - 0.5 mel[r] ...
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Modification of air flows within an industrial carcass chiller using delta wing vortex generators
... The second configuration of delta wings also produced a 14% increase in the mean air turbulence intensity measure of the time-variability in air speed and reduced the variability of evap[r] ...
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Vortex Method for computing high Reynolds number flows: Increased accuracy with a fully mesh less formulation
... the vortex-in-cell method [43, 55, 175, 45, 196, 30, 64, 119, 118, 54], although at the cost of adding interpolation ...plex flows possible; they have, however, caused quite a bit of controversy as they add ...
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Vortex particles and tree codes: I. flows with arbitrary crossing between solid boundaries and particle redistribution lattice; II. vortex ring encountering a plane at an angle.
... Another point of interest is related to the divergence of ω. Maintaining a nearly divergence-free vorticity field is crucial for accurate 3-D simulations. The problem already arises for unbounded flows. One can ...
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