scholarly journals HYDRODYNAMIC FORCE EXERTING ON A SQURE PILLAR IN STEADY FREE SURFACE SHEAR FLOWS

2002 ◽  
Vol 46 ◽  
pp. 827-832
Author(s):  
Juichiro AKIYAMA ◽  
Mirei SHIGE-DA ◽  
Toshihiko KOBAYASHI ◽  
Kazumasa OOTA
Keyword(s):  
Free Surface ◽  
Shear Flows ◽  
Hydrodynamic Force ◽  
Surface Shear

An Experimental Study of a Free-Surface Shear Layer With and Without the Presence of Surfactants

2002 ◽  
Author(s):  
Amy Wamcke Lang ◽  
Carlos E. Manglano
Keyword(s):  
Experimental Study ◽  
Surface Tension ◽  
Free Surface ◽  
Shear Layer ◽  
Turbulence Intensity ◽  
Shear Flows ◽  
Surface Shear ◽  
Surface Deformations

A free-surface shear layer was studied to ascertain the effects due to the presence of surface tension gradients on the directional shift of the shear layer and turbulence intensities in the vicinity of the water free-surface. It was found that the presence of surfactants altered the direction of the shear layer in the vicinity of the free surface, with the shear layer being pulled to the higher surface tension side. In addition, the turbulence intensity in the plane of the free surface was dramatically reduced, also leading to damped surface deformations. These results show conclusively that the role surfactants play in turbulent free-surface shear flows needs to be considered.

Discussion of “Free Surface Shear Flow Over a Wavy Bed”

1969 ◽  
Vol 95 (3) ◽  
pp. 1060-1062
Author(s):  
Omar H. Shemdin ◽  
Robert G. Dean
Keyword(s):  
Free Surface ◽  
Shear Flow ◽  
Surface Shear
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