Coherent structures
Coherent structures in the breakdown bubble of a vortex flow
... such coherent structures within the breakdown bubble are also observed in several other experiments as well as in the present direct numerical simulations (DNS) ...
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Procedures for the identification of coherent structures in oscillatory and pulsating flows over a wavy bottom
... vortical coherent structures; as shown above, it is perfectly possible to design a purely kinematic vortex detection ...these structures with elevated values of TKE, and it is almost certain that ...
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Exact coherent structures in an asymptotically reduced description of parallel shear flows
... self-sustained structures in shear fl ows and may ultimately shed light on the properties of subcritical turbulence in these fl ...exact coherent states/ structures ’ (ECS) remains dif fi cult because ...
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Investigating the connection between complexity of isolated trajectories and Lagrangian coherent structures
... grangian coherent structures in aperiodic flows that are mea- sured over finite time ...yield structures that strongly resemble Lagrangian coherent structures in all of the examples ...
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On Coherent Structures of Turbulent Open-channel Flow Above a Rough Bed
... of coherent structures becomes popular as an approach that try to put order in the disorder of turbulence, detecting and depicting the main features of a turbulent flow field through the identification of ...
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Instability, coherent structures and turbulent mixing in cross sheared flow in stratified environments
... or coherent flow structures, such as “cat eye” shape eddy or fluctuating waves in clouds or ...or coherent structures stem from certain instability modes of flow ...
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Statistical inference from atmospheric time series: detecting trends and coherent structures
... The purpose of this simulation study was to demonstrate that subsampling techniques may be developed to obtain valid statistical inference in a variety of problems, where tradi- tional time series analyses are hindered ...
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Flowtrace: simple visualization of coherent structures in biological fluid flows
... flow structures with minimal user ...and coherent structures without resorting to more intensive ...illustrating coherent structures directly from videos without the need for ...
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Identification of Thermally-Tagged Coherent Structures in the Zero Pressure Gradient Turbulent Boundary Layer
... these coherent structures as warmer tem- peratures indicated fluid originating at the wall and cooler temperatures were associated with fluid from the outer boundary ...of coherent structures ...
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Validation of the -filtering technique for a signal composed of random-phase plane waves and non-random coherent structures
... of coherent structures and random-phase plane ...a coherent wave packet, i.e. a coherent signal windowed by an envelope of limited ...extension. Coherent structures are ...
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Identification of Lagrangian Coherent Structures around Swimming Jellyfish from Experimental Time-series Data
... First, in order to verify the current algorithm, we concentrated on investigating the case of planar flow around a vortex dipole. Figure 3.1 (a) shows the forward-time FTLE field calculated from the position data of the ...
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Macroscopic coherent structures in a stochastic neural network: from interface dynamics to coarse grained bifurcation analysis
... A complementary approach, dating back to Wilson and Cowan (1972, 1973) and Amari (1975, 1977), foregoes describing activity at the single neuron level by repre- senting averaged activity across populations of neurons. ...
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Macroscopic coherent structures in a stochastic neural network: from interface dynamics to coarse grained bifurcation analysis
... several coherent structures such as localised radially-symmetric states [72, 54, 52, 14, 29], localised patches [53, 63, 4], patterns on lattices with various symmetries [23, 13], travelling bumps and ...
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Lagrangian coherent structures of accumulating inertial particles in vortex flow on a disk
... Lagrangian Coherent Structures is ...The structures can be shown by calculating the Finite-time Lyapunov Exponent (FTLE) for each grid ...Lagrangian Coherent Structures and the back ...
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Continuation of localised coherent structures in nonlocal neural field equations
... waves [22, 31, 46]. Neural field equations have also successfully been used to model a wide range of neurobiological phenomena such as visual hallucinations [12, 32], mech- anisms for short term memory [48] and feature ...
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An example of resonances, coherent structures and topological phase transitions – the origin of the low frequency broadband spectrum in the auroral zone
... anisotropic coherent structures. The stochas- tic behavior of these coherent plasma structures can undergo complex changes as the dynamic system evolves, similar to those commonly observed in ...
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A variational formulation for translation and assimilation of coherent structures
... contain coherent structures that teledetected images may ex- hibit, as for example in the atmosphere for tropical cyclones or midlatitude storms (Plu et ...of structures cannot be assimilated ...
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Modified Structure Function Model Based on Coherent Structures
... In this paper a modified structure function was introduced. In this modified structure function the constant coefficient of standard structure function is computed locally based on coherent structure procedure. ...
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On the nature, formation and diversity of particulate coherent structures in microgravity conditions and their relevance to materials science and problems of astrophysical interest
... resulting structures (which appear in the form of one-dimensional circuits formed by aligned particles, planar accumulation surfaces, three-dimensional compact structures resembling “quadrics”, micro- ...
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Trapping, Anomalous Transport, and Quasi-coherent Structures in Magnetically Confined Plasmas
... We investigated the problem of stochastic advection of test particles by the E × B drift in turbulent plasmas. We showed that trajectory trapping or eddying has com- plex nonlinear effects on the statistical ...
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