scholarly journals 208 Experiments on the Turbulent Boundary Layer on a Cylinder Rotating in an Axial Flow : Spiral-Vortex Structure(1)

2007 ◽  
Vol 2007 (0) ◽  
pp. _208-a_
Author(s):  
Shintaro YAMASHITA ◽  
Chiharu FUKUSHIMA ◽  
Yoshihiro INOUE ◽  
Makoto NISHIGAKI ◽  
Haruhisa YANO
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Vortex Structure ◽  
Axial Flow ◽  
Spiral Vortex

208 Experiments on the Turbulent Boundary Layer on a Cylinder Rotating in an Axial Flow : Spiral-Vortex Structure(2)

2007 ◽  
Vol 2007 (0) ◽  
pp. _208-1_-_208-4_
Author(s):  
Shintaro YAMASHITA ◽  
Chiharu FUKUSHIMA ◽  
Yoshihiro INOUE ◽  
Makoto NISHIGAKI ◽  
Haruhisa YANO
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Vortex Structure ◽  
Axial Flow ◽  
Spiral Vortex

The response of a turbulent boundary layer to lateral divergence

1979 ◽  
Vol 94 (2) ◽  
pp. 243-268 ◽  
Author(s):  
A. J. Smits ◽  
J. A. Eaton ◽  
P. Bradshaw
Keyword(s):  
Boundary Layer ◽  
Circular Cylinder ◽  
Turbulent Boundary Layer ◽  
Structural Parameters ◽  
Axial Flow ◽  
Turbulence Structure ◽  
Two Dimensional ◽  
Transition Section ◽  
Two Dimensional Flow ◽  
Made In

Measurements have been made in the flow over an axisymmetric cylinder-flare body, in which the boundary layer developed in axial flow over a circular cylinder before diverging over a conical flare. The lateral divergence, and the concave curvature in the transition section between the cylinder and the flare, both tend to destabilize the turbulence. Well downstream of the transition section, the changes in turbulence structure are still significant and can be attributed to lateral divergence alone. The results confirm that lateral divergence alters the structural parameters in much the same way as longitudinal curvature, and can be allowed for by similar empirical formulae. The interaction between curvature and divergence effects in the transition section leads to qualitative differences between the behaviour of the present flow, in which the turbulence intensity is increased everywhere, and the results of Smits, Young & Bradshaw (1979) for a two-dimensional flow with the same curvature but no divergence, in which an unexpected collapse of the turbulence occurred downstream of the curved region.

Effect of Transverse Curvature on Turbulent-Boundary-Layer Characteristics

1958 ◽  
Vol 2 (04) ◽  
pp. 33-51
Author(s):  
Yun-Sheng Yu
Keyword(s):  
Boundary Layer ◽  
Circular Cylinder ◽  
Turbulent Boundary Layer ◽  
Velocity Profile ◽  
Pressure Gradient ◽  
Boundary Layer Thickness ◽  
Axial Flow ◽  
Shearing Stress ◽  
Transverse Curvature ◽  
Similarity Laws

Tests made on the turbulent boundary layer on a circular cylinder in axial flow at zero pressure gradient are described. From the measurements, similarity laws of the velocity profile are formulated, and various boundary-layer characteristics are evaluated and compared with the flatplate results. It is found that the effect of transverse curvature is to increase the surface shearing stress and to decrease the boundary-layer thickness, and that the latter variation is more pronounced than the former.

Turbulent boundary layer on a cylinder in axial flow

AIAA Journal ◽  
1990 ◽  
Vol 28 (10) ◽  
pp. 1705-1706 ◽  
Author(s):  
Richard M. Lueptow
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Axial Flow

The structure of the turbulent boundary layer on a cylinder in axial flow

1987 ◽  
Vol 30 (10) ◽  
pp. 2993 ◽  
Author(s):  
Richard M. Lueptow ◽  
Joseph H. Haritonidis
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Axial Flow
Sign in / Sign up

Export Citation Format

Share Document