Time-averaged asymmetries and oscillatory global modes of vortex flows over a slender wing

Heng Luo; Bao-Feng Ma

doi:10.1063/1.5040571

Time-averaged asymmetries and oscillatory global modes of vortex flows over a slender wing

Physics of Fluids ◽

10.1063/1.5040571 ◽

2018 ◽

Vol 30 (9) ◽

pp. 097101 ◽

Cited By ~ 4

Author(s):

Heng Luo ◽

Bao-Feng Ma

Keyword(s):

Vortex Flows ◽

Global Modes ◽

Slender Wing

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Discussion following the presentation by F. Deubner

International Astronomical Union Colloquium ◽

10.1017/s0252921100053240 ◽

1977 ◽

Vol 36 ◽

pp. 69-74

Keyword(s):

List Type ◽

The Sun ◽

Type Number ◽

Harmonic Motion ◽

Locally Excited ◽

Long Period ◽

Coherent Wave ◽

Short Period ◽

Global Modes

The discussion was separated into 3 different topics according to the separation made by the reviewer between the different periods of waves observed in the sun :1) global modes (long period oscillations) with predominantly radial harmonic motion.2) modes with large coherent - wave systems but not necessarily global excitation (300 s oscillation).3) locally excited - short period waves.

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Synchronization between PIV and Electro-diffusion techniques for the characterization of Wavy Taylor Vortex flows with axial flows

Proceeding of THMT-12. Proceedings of the Seventh International Symposium On Turbulence, Heat and Mass Transfer Palermo, Italy, 24-27 September, 2012 ◽

10.1615/ichmt.2012.procsevintsympturbheattransfpal.590 ◽

2012 ◽

Cited By ~ 1

Author(s):

E. Berrich ◽

F. Aloui ◽

Jack Legrand

Keyword(s):

Taylor Vortex ◽

Vortex Flows

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VORTEX FLOWS OF A MICROPOLAR FLUID

TsAGI Science Journal ◽

10.1615/tsagiscij.v41.i4.60 ◽

2010 ◽

Vol 41 (4) ◽

pp. 437-449 ◽

Cited By ~ 1

Author(s):

M. A. Brutyan ◽

V. E. Kovalev

Keyword(s):

Micropolar Fluid ◽

Vortex Flows

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Eulerian and Lagrangian observability of point vortex flows

Tellus A Dynamic Meteorology and Oceanography ◽

10.3402/tellusa.v60i5.15509 ◽

2008 ◽

Cited By ~ 1

Author(s):

Arthur J. Krener

Keyword(s):

Point Vortex ◽

Vortex Flows

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Global stability analysis of the axisymmetric boundary layer: Effect of axisymmetric forebody shapes on the helical global modes

Pramana ◽

10.1007/s12043-021-02147-4 ◽

2021 ◽

Vol 95 (3) ◽

Author(s):

Ramesh Bhoraniya ◽

Vinod Narayanan

Keyword(s):

Boundary Layer ◽

Stability Analysis ◽

Global Stability ◽

Boundary Layer Effect ◽

Global Stability Analysis ◽

Layer Effect ◽

Global Modes

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Numerical Analysis of Air Vortex Interaction with Porous Screen

Fluids ◽

10.3390/fluids6020070 ◽

2021 ◽

Vol 6 (2) ◽

pp. 70

Author(s):

Xudong An ◽

Lin Jiang ◽

Fatemeh Hassanipour

Keyword(s):

Physical Properties ◽

Vortex Ring ◽

Numerical Study ◽

Flow Behavior ◽

Industrial Applications ◽

Moving Mesh ◽

Vortex Flows ◽

Vortex Interaction ◽

Piston Cylinder ◽

Porous Screen

In many industrial applications, a permeable mesh (porous screen) is used to control the unsteady (most commonly vortex) flows. Vortex flows are known to display intriguing behavior while propagating through porous screens. This numerical study aims to investigate the effects of physical properties such as porosity, Reynolds number, inlet flow dimension, and distance to the screen on the flow behavior. The simulation model includes a piston-cylinder vortex ring generator and a permeable mesh constructed by evenly arranged rods. Two methods of user-defined function and moving mesh have been applied to model the vortex ring generation. The results show the formation, evolution, and characteristics of the vortical rings under various conditions. The results for vorticity contours and the kinetic energy dissipation indicate that the physical properties alter the flow behavior in various ways while propagating through the porous screens. The numerical model, cross-validated with the experimental results, provides a better understanding of the fluid–solid interactions of vortex flows and porous screens.

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