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Laws of Flow in Rough PipesAn experimental investigation is made of the turbulent flow of water in pipes with various degrees of relative roughness. The pipes range in size from 25 to 100 millimeters in diameter and from 1800 to 7050 millimeters in length. Flow velocities permitted Reynolds numbers from about 10 (sup. 4) to 10 (sup. 6). The laws of resistance and velocity distributions were obtained as a function of relative roughness and Reynolds number. Mixing length, as described by Prandtl's mixing-length formula, is discussed in relation to the experimental results.
Document ID
19930093938
Document Type
Other
Authors
Nikuradse, J
Date Acquired
August 16, 2013
Publication Date
November 1, 1950
Report/Patent Number
NACA-TM-1292
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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