Results 261 to 270 of about 291,257 (303)

Coherent structures in turbulent flow

2007
It is customary to say that the problem of turbulence remains the outstanding challenge of fluid dynamics, but in fact the concerted efforts of many scientists and engineers over the years have led to a considerable body of useful knowledge. The three processes of cataloguing, curve fitting and 'postdicting' are well under control.
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Coherent structures of turbulence in wall-bounded turbulent flows

2011
Dottorato di Ricerca in Ingegneria Idraulica per l Ambiente e il Territorio, Ciclo XXII,a.a ...
Ciliberti, Stefania Angela, Macchione, Francesco, Alfonsi, Giancarlo   +2 more
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Turbulence Structure in Plane Couette Flow

Journal of the Engineering Mechanics Division, 1970
Turbulent flow between two plane surfaces in relative shearing motion has been studied with air in a belt-type apparatus with one fixed surface. Mean velocities, turbulence intensities, scales and energy spectra measured in this flow indicate two regions of appreciably different characteristics.
James M. Robertson, Henry F. Johnson
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The Structure of Turbulent Flows

1977
Figure 22.1 shows four photographs of a turbulent boundary layer. Hydrogen bubble markers were released in small squares (as described in Section 23.4) from a fine wire parallel to the wall and perpendicular to the mean flow. The different pictures were taken with the wire at different distances from the wall, ranging from close to the wall to close to
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Vortex structures in turbulent flow

2000
Abstract It is an honour to be invited to lecture in this magnificent hall of the University of Edinburgh, where I was privileged to study mathematics and physics in the great era of Aitken, Edge, Schlapp, Kemmer and Nisbet. I matriculated here in 1953.
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Temporal Evolution of Dominant Flow Structures in Turbulent Channel Flow

2009
The flow of a viscous incompressible fluid in a plane channel is simulated numerically with the use of a computational code for the numerical integration of the unsteady three-dimensional Navier-Stokes equations. The numerical method is based on a mixed spectral-finite difference algorithm.
Alfonsi G., Primavera L.
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The Structure of Turbulent Flows

2019
Structural properties of turbulent flows are introduced and classified in the present chapter. They have been the subject of experimental and theoretical research for a long time, see the proceedings of the IUTAM symposium in Cambridge U.K. 1989 [1] for the topological and geometric aspects of flow structures.
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Coherent Structures in Turbulent Shear Flows

Applied Mechanics Reviews, 1990
What is firmly known about the kinematic properties and dynamic importance of coherent structures in bounded and unbounded turbulent shear flows is briefly summarized. The nature of instabilities giving rise to these structures is discussed. Unanswered questions requiring further research are posed.
J. M. Wallace, F. Hussain
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Structure of Turbulent Hydromagnetic Channel Flows

The Physics of Fluids, 1968
The predictions of velocity profiles in hydromagnetic channel flows derived during an earlier study compare satisfactorily with recent experimental measurements of Brouillette and Lykoudis.
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Turbulent Heat Flow: Structures and Scaling

Physics Today, 2001
Geometrical structures and scaling behavior provide insights into the nature of convective turbulence and some risky generalizations about “complex systems.”
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