Nearwall similarity in two and threedimensional turbulent boundary layers
Abstract
Static pressure, mean velocity, indirect wall shear from Preston tubes, direct wall shear using a two dimensional (single line of action) floating element device, and direct wall shear measurements from an omnidirectional floating element capable of simultaneously determining magnitude and direction of a wall shear vector were completed over a modest range of two dimensional (near zero) pressure gradient flows. State pressure, mean velocity, and direct wall shear measurements using the omnidirectional meter were completed in a pressure driven, and two different shear driven three dimensional flows. These data were combined to evaluate ten of eleven three dimensional similarity models found in the literature. Uncertainty estimates on all the data are presented. Two dimensional experimental results show that the constants in the two dimensional law of the wall formula appear to be slightly dependent on Reynolds number, and the Patel calibration formulas for Preston tubes to be better than any other available formulas.
 Publication:

Ph.D. Thesis
 Pub Date:
 1979
 Bibcode:
 1979PhDT.......109M
 Keywords:

 Pitot Tubes;
 Three Dimensional Flow;
 Turbulent Boundary Layer;
 Wall Flow;
 Mathematical Models;
 Pressure Gradients;
 Static Pressure;
 Three Dimensional Models;
 Wall Pressure;
 Fluid Mechanics and Heat Transfer