Results 231 to 240 of about 14,454,704 (305)
Coherent lamellar phase decomposition of alkali feldspar studied by a microscopic approach *
Benisek A, Dachs E, Zickler G, Abart R.
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Coherent structures in tornado-like vortices
Physics of Fluids, 2018The dynamics of tornadolike vortices is investigated through a set of novel physical experiments and modal analyses for a wide range of swirl ratios (0.22 ≤ S ≤ 0.96). Various physical phenomena such as wandering, vortex breakdown, or transition from one-cell to two-cell structures are observed.
Karami, Mohammad +3 more
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Asymmetrical inseparable coherent structures
Optics Letters, 2022A novel, to the best of our knowledge, class of coherent structures of inseparability, incorporating phases asymmetrically cross-coupled by two position vectors, is introduced in theory and experiment. These phases disappear in the environment of complete coherence, but the vanishment is avoidable in the coexistent state of extreme incoherence and full
Zehong Liang +7 more
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Coherent structures in the turbulent channel flow of an elastoviscoplastic fluid
Journal of Fluid Mechanics, 2020In this numerical and theoretical work, we study the turbulent channel flow of Newtonian and elastoviscoplastic fluids. The coherent structures in these flows are identified by means of higher order dynamic mode decomposition (HODMD), applied to a set of
S. L. Clainche +4 more
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Coherent structures in multidimensions
Physical Review Letters, 1989We solve an initial-boundary value problem for the Davey-Stewartson equation, a multidimensional analog of the nonlinear Schr\"odinger equation. It is shown that for large time, an arbitrary initial disturbance will, in general, decompose into a number of two-dimensional coherent structures. These structures exhibit interesting novel features not found
Fokas AS, SANTINI, Paolo Maria
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Challenges in Scale-Resolving Simulations of turbulent wake flows with coherent structures
Journal of Computational Physics, 2018The objective of this work is to investigate the challenges encountered in Scale-Resolving Simulations (SRS) of turbulent wake flows driven by spatially-developing coherent structures.
F. Pereira, L. Eça, G. Vaz, S. Girimaji
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‘Coherent Structures in turbulence’
Journal of Fluid Mechanics, 1975This account of the Colloquium on Coherent Structures in Turbulence held at Southampton from 26-29 March 1974 presents a brief summary of two invited lectures and 42 formal presentations on turbulent shear-flow structure. A number of shorter contributions and discussions are also outlined.
Davies, P. O. A. L., Yule, A. J.
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1990
Abstract Organizing a logical account of a fashionable and fast-growing subject, like the study of coherent structures (or recognizable ‘deterministic’ patterns) in turbulent flows, is not without its difficulties. To begin with, quite a variety of such structures has now been identified, and, although different structures can appear to ...
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Abstract Organizing a logical account of a fashionable and fast-growing subject, like the study of coherent structures (or recognizable ‘deterministic’ patterns) in turbulent flows, is not without its difficulties. To begin with, quite a variety of such structures has now been identified, and, although different structures can appear to ...
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GEOPHYSICS, 1974
The wavefield generated at the surface of the earth from a surface seismic source can be represented as a function F(f, k) in the frequency wave‐number domain. This function depends upon the source and the propagation characteristics of the underlying structure. For any particular frequency the spatial coherence as observed at two points [Formula: see
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The wavefield generated at the surface of the earth from a surface seismic source can be represented as a function F(f, k) in the frequency wave‐number domain. This function depends upon the source and the propagation characteristics of the underlying structure. For any particular frequency the spatial coherence as observed at two points [Formula: see
openaire +1 more source