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A note on vortex streets behind circular cylinders at low Reynolds numbers
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In this paper, the current state of knowledge of vortex streets behind circular cylinders in the Reynolds number range 50 to 160 is discussed, and a brief experiment confirming the existence of the transition is described.Abstract:
A discussion is given of the current state of knowledge of vortex streets behind circular cylinders in the Reynolds number range 50 to 160. This was prompted by Gaster's (1969) report that he could not find the transition at a Reynolds number of about 90 observed by Tritton (1959) and Berger (1964a). A further brief experiment confirming the existence of the transition is described Reasons for rejecting Gaster's interpretation are advanced. Possible (mutually alternative) explanations of the discrepant observations are suggested.read more
Citations
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Oblique and Parallel Modes of Vortex Shedding in the Wake of a Circular Cylinder at Low Reynolds Numbers
TL;DR: In this article, it was shown that the Strouhal discontinuity is not due to any of the previously proposed mechanisms, but instead is caused by a transition from one oblique shedding mode to another oblique mode.
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Numerical study and physical analysis of the pressure and velocity fields in the near wake of a circular cylinder
M. Braza,P. Chassaing,H. Ha Minh +2 more
TL;DR: In this paper, the authors investigated the dynamic characteristics of the pressure and velocity fields of the unsteady incompressible laminar wake behind a circular cylinder, and the initiation mechanism for vortex shedding and evaluation of the body forces are presented for Reynolds-number values of 100, 200 and 1000.
Journal ArticleDOI
Bénard-von Kármán instability: transient and forced regimes
M. Provansal,C. Mathis,L. Boyer +2 more
TL;DR: In this article, the wake of a circular cylinder near the oscillation threshold is investigated by means of a laser probe, and the Stuart-Landau law is used to explain free-oscillating regimes.
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A finite-element study of the onset of vortex shedding in flow past variously shaped bodies
TL;DR: In this paper, the onset of periodic behavior in two-dimensional laminar flow past bodies of various shapes is examined by means of finite-element simulations, and the transition from steady to periodic flow is marked by a Hopf bifurcation, which is located by solving an appropriate extended set of steady-state equations.
Journal ArticleDOI
A modified finite element method for solving the time‐dependent, incompressible Navier‐Stokes equations. Part 1: Theory
TL;DR: In this article, the Galerkin finite element method and the simplest appropriate isoparametric element for modelling the Navier-Stokes equations are modified in two ways in the interest of cost-effectiveness: the mass matrix is lumped and all coefficient matrices are generated via l-point quadrature.
References
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Experiments on the flow past a circular cylinder at low Reynolds numbers
TL;DR: In this article, the authors describe measurements of the drag on circular cylinders, made by observing the bending of quartz fibres, in a stream with the Reynolds number range 0·5-100.
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Vortex shedding from slender cones at low Reynolds numbers
TL;DR: In this article, a mathematical analogue of the wake, which helps to explain these features of the flow, has been constructed and the pattern of vortices in the wake of a cone suggested by this model is in reasonable agreement with the photographic evidence.
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