Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around________________? August 26, 2021March 9, 2019 by admin Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around________________? A. 2000 B. 10 C. 100D. 1000