Experimental Investigation of the Problem of Surface Roughness (1937)
NASA Technical Reports Server (NTRS) · leaf 43
log Re—— Figure 1.- The resistance factor X=-2_ £ of rough pipe* as a function of the Reynolds ^ ^ P5 £ Number Re=^ and the relative roughness r/k for sand roughness (after Nikuradse). ^
NASA Technical Reports Server (NTRS)
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