The design of low-turbulence wind tunnels

Hugh L. Dryden, Ira H. Abbott
Nov 1949

Within the past 10 years there have been placed in operation in the United States four low-turblence wind tunnels of moderate cross-sectional area and speed, one at the National Bureau of Standards, two at the NACA Langley Laboratory, and one at the NACA Ames Laboratory. In these wind tunnels the magnitude of the turbulent velocity fluctuations is of the order of 0.0001 to 0.001 times the mean velocity.

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