Three-dimensional flow characteristics about a curved circular cylinder.

1966 ◽  
Vol 3 (1) ◽  
pp. 73-74
Author(s):  
JEAN C. SURRY
Keyword(s):  
Circular Cylinder ◽  
Three Dimensional ◽  
Flow Characteristics ◽  
Three Dimensional Flow ◽  
Dimensional Flow

scholarly journals Three dimensional flow around a circular cylinder confined in a plane channel

2011 ◽  
Vol 23 (6) ◽  
pp. 064106 ◽  
Author(s):  
Nicolas Kanaris ◽  
Dimokratis Grigoriadis ◽  
Stavros Kassinos
Keyword(s):  
Circular Cylinder ◽  
Three Dimensional ◽  
Plane Channel ◽  
Three Dimensional Flow ◽  
Dimensional Flow

Three-dimensional instabilities in oscillatory flow past elliptic cylinders

2016 ◽  
Vol 798 ◽  
pp. 371-397 ◽  
Author(s):  
José P. Gallardo ◽  
Helge I. Andersson ◽  
Bjørnar Pettersen
Keyword(s):  
Circular Cylinder ◽  
Flow Direction ◽  
Three Dimensional ◽  
Circular Cylinders ◽  
Flow Structures ◽  
Three Dimensional Flow ◽  
Elliptical Cross ◽  
Dimensional Flow ◽  
Aspect Ratios ◽  
Flow Past

We investigate the early development of instabilities in the oscillatory viscous flow past cylinders with elliptic cross-sections using three-dimensional direct numerical simulations. This is a classical hydrodynamic problem for circular cylinders, but other configurations have received only marginal attention. Computed results for some different aspect ratios ${\it\Lambda}$ from 1 : 1 to 1 : 3, all with the major axis of the ellipse aligned in the main flow direction, show good qualitative agreement with Hall’s stability theory (J. Fluid Mech., vol. 146, 1984, pp. 347–367), which predicts a cusp-shaped curve for the onset of the primary instability. The three-dimensional flow structures for aspect ratios larger than 2 : 3 resemble those of a circular cylinder, whereas the elliptical cross-section with the lowest aspect ratio of 1 : 3 exhibits oblate rather than tubular three-dimensional flow structures as well as a pair of counter-rotating spanwise vortices which emerges near the tips of the ellipse. Contrary to a circular cylinder, instabilities for an elliptic cylinder with sufficiently high eccentricity emerge from four rather than two different locations in accordance with the Hall theory.

G403 The relation between three dimensional flow structure in wake and emitted sound at inclined circular cylinder

2001 ◽  
Vol 2001 (0) ◽  
pp. 217
Author(s):  
Yasutake HARAMOTO ◽  
Tomo KINJYO ◽  
Kazuyoshi MATSUZAKI ◽  
Mizue MUNEKATA ◽  
Hideki OHBA
Keyword(s):  
Circular Cylinder ◽  
Flow Structure ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Dimensional Flow
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