The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/‚Äö√ √∂f)-0.4, is called the __________ equation.#

The equation relating friction factor to Reynold number, f-0.5 = 4 log

1.	The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/‚Äö√ √∂f)-0.4, is called the __________ equation.#
A.	Nikuradse
B.	Von-Karman
C.	Blausius
D.	Colebrook
Answer» B. Von-Karman

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The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/‚Äö√ √∂f)-0.4, is called the __________ equation.#

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