The spanwise nonuniformity of nominally twodimensional turbulent boundary layer. II  Wall shear stress and flow field
Abstract
The scale and mechanism of streamwise vortices are investigated by measuring the flow direction in a turbulent boundary layer. A floating elementtype device is constructed, and the local wall shear stress is measured by this apparatus. The values of wall shear stress obtained by this method are compared with the values obtained by other methods, such as the Clauser chart and the Prestontube method. It is inferred that the mean value of wall shear stress can be expressed by a twodimensional equation even though the spatial variations of the mean velocity are remarkably large as in this case. The mechanism of the spatial variation of this turbulent boundary layer is clarified by using these experimental results.
 Publication:

JSME International Journal Series B
 Pub Date:
 July 1975
 Bibcode:
 1975JSMEB..18..673F
 Keywords:

 Flow Velocity;
 Shear Stress;
 Turbulent Boundary Layer;
 Two Dimensional Boundary Layer;
 Velocity Distribution;
 Vortices;
 Boundary Layer Equations;
 Flat Plates;
 Floating;
 Flow Measurement;
 Stress Measurement;
 Wall Flow;
 Fluid Mechanics and Heat Transfer