Analogies between Oscillation and Rotation of Bodies Induced or Influenced by Vortex Shedding

Vortex Motion ◽  
1982 ◽  
pp. 82-96 ◽  
Author(s):  
Hans J. Lugt
Keyword(s):  
Vortex Shedding

SHIFT IN VORTEX SHEDDING MODE FOR FLOWOVER STREAMWISE OSCILLATING CYLINDER UNDER CONSTANT CONDITIONS

2020 ◽  
Author(s):  
Ahmad Elhares ◽  
Krishna Shah ◽  
Yanbao Ma
Keyword(s):  
Vortex Shedding ◽  
Oscillating Cylinder

Evolution of unstable system.

2015 ◽  
Vol 9 (3) ◽  
pp. 2487-2502 ◽  
Author(s):  
Igor V. Lebed
Keyword(s):  
Reynolds Number ◽  
Vortex Shedding ◽  
Stokes Flow ◽  
Stable Solution ◽  
The State ◽  
Unstable System ◽  
Unstable Flow ◽  
Unstable Solutions ◽  
Vortex Shedding Modes ◽  
Hydrodynamics Equations

Scenario of appearance and development of instability in problem of a flow around a solid sphere at rest is discussed. The scenario was created by solutions to the multimoment hydrodynamics equations, which were applied to investigate the unstable phenomena. These solutions allow interpreting Stokes flow, periodic pulsations of the recirculating zone in the wake behind the sphere, the phenomenon of vortex shedding observed experimentally. In accordance with the scenario, system loses its stability when entropy outflow through surface confining the system cannot be compensated by entropy produced within the system. The system does not find a new stable position after losing its stability, that is, the system remains further unstable. As Reynolds number grows, one unstable flow regime is replaced by another. The replacement is governed tendency of the system to discover fastest path to depart from the state of statistical equilibrium. This striving, however, does not lead the system to disintegration. Periodically, reverse solutions to the multimoment hydrodynamics equations change the nature of evolution and guide the unstable system in a highly unlikely direction. In case of unstable system, unlikely path meets the direction of approaching the state of statistical equilibrium. Such behavior of the system contradicts the scenario created by solutions to the classic hydrodynamics equations. Unstable solutions to the classic hydrodynamics equations are not fairly prolonged along time to interpret experiment. Stable solutions satisfactorily reproduce all observed stable medium states. As Reynolds number grows one stable solution is replaced by another. They are, however, incapable of reproducing any of unstable regimes recorded experimentally. In particular, stable solutions to the classic hydrodynamics equations cannot put anything in correspondence to any of observed vortex shedding modes. In accordance with our interpretation, the reason for this isthe classic hydrodynamics equations themselves.

Some modeling issues on trailing-edge vortex shedding

AIAA Journal ◽  
2001 ◽  
Vol 39 ◽  
pp. 787-793
Author(s):  
Wei Ning ◽  
Li He
Keyword(s):  
Vortex Shedding ◽  
Trailing Edge ◽  
Edge Vortex

COMPARISON OF LES WITH DSM, k-ε AND EXPERIMENTS FORTURBULENT VORTEX SHEDDING FLOW PAST 2D SQUARE CYLINDER

1994 ◽  
Vol 59 (459) ◽  
pp. 49-56 ◽  
Author(s):  
Shigehiro SAKAMOTO ◽  
Akashi MOCHIDA ◽  
Shuzo MURAKAMI ◽  
Wolfgang RODI
Keyword(s):  
Vortex Shedding ◽  
Square Cylinder ◽  
Flow Past

scholarly journals Asymmetric vortex shedding in the wake of an abruptly expanding annular jet

2021 ◽  
Vol 62 (4) ◽  
Author(s):  
Maarten Vanierschot ◽  
Mustafa Percin ◽  
Bas W. van Oudheusden
Keyword(s):  
Vortex Shedding ◽  
Asymmetric Vortex ◽  
Annular Jet

Effect of slip on vortex shedding from a circular cylinder in a gas flow

2021 ◽  
Vol 6 (6) ◽  
Author(s):  
M. A. Gallis ◽  
J. R. Torczynski
Keyword(s):  
Circular Cylinder ◽  
Vortex Shedding ◽  
Gas Flow

Vortex shedding noise and flow mode analysis of cylinder with full/partial porous coating

2020 ◽  
Vol 106 ◽  
pp. 106154
Author(s):  
Zhijie Hu ◽  
Hanru Liu ◽  
Nanshu Chen ◽  
Jiawei Hu ◽  
Fan Tong
Keyword(s):  
Vortex Shedding ◽  
Mode Analysis ◽  
Porous Coating ◽  
Flow Mode ◽  
Vortex Shedding Noise
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