scholarly journals Vortex shedding from a circular cylinder placed vertically in a laminar boundary layer.

1987 ◽  
Vol 53 (487) ◽  
pp. 714-721 ◽  
Author(s):  
Hiroshi SAKAMOTO ◽  
Hiroyuki HANIU ◽  
Yoshihiro OBATA
Keyword(s):  
Boundary Layer ◽  
Circular Cylinder ◽  
Laminar Boundary Layer ◽  
Vortex Shedding

scholarly journals Reducing Drag of Body by Adding a Plate

2018 ◽  
Vol 220 ◽  
pp. 07002 ◽  
Author(s):  
A. Frolov Vladimir ◽  
S. Kozlova Anna
Keyword(s):  
Boundary Layer ◽  
Circular Cylinder ◽  
Flat Plate ◽  
Laminar Boundary Layer ◽  
Separation Point ◽  
Theoretical Investigations

This paper focuses on theoretical investigations of the location of a separation point laminar boundary layer on the surface of a circular cylinder. The investigations were carried out by CFD software FlowSimulation. The displacement of the separation point on the surface of the circular cylinder is achieved by installing a flat plate in front of the cylinder parallel to the flow. It was found that the greatest displacement of the separation point to the back of the cylinder is possible when the chord of the plate equals to a quarter of the diameter of the circular cylinder. The flat plate allows not only to change the position of the separation point but also to reduce the drag by about 25%.

B13 Junction Flow of Circular Cylinder and Flat Wall with Laminar Boundary Layer

2009 ◽  
Vol 2009.62 (0) ◽  
pp. 47-48
Author(s):  
Hidemi YAMADA ◽  
Eigo HAYASHI ◽  
Akio SATOH ◽  
Syunji YOSHINO
Keyword(s):  
Boundary Layer ◽  
Circular Cylinder ◽  
Laminar Boundary Layer ◽  
Flat Wall ◽  
Junction Flow

Velocity Measurements on the Forward Portion of a Cylinder

1990 ◽  
Vol 112 (2) ◽  
pp. 243-245 ◽  
Author(s):  
D. E. Paxson ◽  
R. E. Mayle
Keyword(s):  
Boundary Layer ◽  
Laminar Flow ◽  
Circular Cylinder ◽  
Vortex Shedding ◽  
Static Pressure ◽  
Free Stream ◽  
Stream Velocity ◽  
Pressure Measurements ◽  
Velocity Measurements ◽  
Flow Around A Cylinder

Velocity measurements in the laminar boundary layer around the forward portion of a circular cylinder are presented. These results are compared to Blasius’ theory for laminar flow around a cylinder using a free-stream velocity distribution obtained from static pressure measurements on the cylinder. Even though the flow is periodically unsteady as a result of vortex shedding from the cylinder, it is found that the agreement is excellent.

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