Characteristics for a Flow Past a Circular Cylinder with Two Types of Radial Disturbances at Re=100
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For better understanding physical mechanism of radial disturbances, previously proposed to disturb the wake flow and vortex-induced vibration of risers, numerical simulations are carried out for the flow around the fixed cylinder with such disturbances at a Reynolds number of 100 as discussed by the authors.Abstract:
For better understanding physical mechanism of radial disturbances, previously proposed to disturb the wake flow and vortex-induced vibration of risers, numerical simulations are carried out for the flow around the fixed cylinder with such disturbances at a Reynolds number of 100. After introducing disturbances, specific distributions of flow and vertical vorticity near cylinder surfaces are identified and related to different vortex patterns. The spanwise variation of free shear layers is discussed and physically explained. Different characteristics for the pressure on cylinder surfaces, frequency of vortex shedding and time history of lift are also analyzed and presented in detail.read more
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Effect of perforation on flow past a conic cylinder at \varvec{Re} = 100: wavy vortex and sign laws
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Effect of perforation on flow past a conic cylinder at Re=100: vortex-shedding pattern and force history
TL;DR: In this article, the effects of perforated conic shroud on the vortex shedding pattern in the near wake was mainly investigated, as well as the time history of the drag and lift forces.
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Effect of peak perforation on flow past a conic cylinder at Re=100: drag lift and Strouhal number
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The Drag, Lift and Strouhal Number of a Circular-Section Cylinder With a Conic Disturbance at Subcritical Reynolds Numbers
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References
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Journal ArticleDOI
Vortex Dynamics in the Cylinder Wake
TL;DR: A review of wake vortex dynamics can be found in this article, with a focus on the three-dimensional aspects of nominally two-dimensional wake flows, as well as the discovery of several new phenomena in wakes.
Journal ArticleDOI
Vortex-induced vibrations
TL;DR: In this paper, a review summarizes fundamental results and discoveries concerning vortex-induced vibration (VIV) that have been made over the last two decades, many of which are related to the push to explore very low mass and damping, and to new computational and experimental techniques that were hitherto not available.
Journal ArticleDOI
A critical review of the intrinsic nature of vortex-induced vibrations
TL;DR: A comprehensive review of the progress made during the past two decades on vortex-induced vibration (VIV) of mostly circular cylindrical structures subjected to steady uniform flow is presented in this article.
Journal ArticleDOI
An overview of modeling and experiments of vortex-induced vibration of circular cylinders
Rene D. Gabbai,Haym Benaroya +1 more
TL;DR: A review of mathematical models used to investigate vortex-induced vibration (VIV) of circular cylinders is given in this article, with a focus on single-degree-of-freedom (SFOF) models.