Effect of Turbulence in Wind-Tunnel Measurements (1931)
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ed that the curves run from right to left These results are plotted in Figure 7, which is a cali- in order of increasing turbulence in accordance with bration of the sphere as an instrument for measuring the interpretation of Wieselsberger's measurements (reference 18) of the effect of screens. To… … Logl0— Figure 5.—Drag coefficients for 4" and 5" spheres. p = air density, t/0=air speed, ^L=area of cross section of sphere = 7r~— D=diameter of sphere, v = kinematic viscosity turbulence. The circles show the approximate limits of individual values. The accuracy while not high is perhaps…
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