Results are presented in the form of the non-dimensional inner logarithmic wall law for turbulent shear flow through two-dimensional smooth wind tunnels. The local resistance law is established by direct experimental measurement and from velocity distributions. The experiment is carried out using two wind tunnels of different aspect ratios, the results from each providing the same statement of the smooth laws. Comparison of these results with those of other similar investigations is made.nA further development of Person’s surface-tube method for determining wall shearing stress is shown to be superior to the usual static pressure gradient method.
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