Question

The friction factor in fluid flowing through pipe depends upon

Answer 1

Answer:

relative roughness of pipe surface

Answer 2

Answer:

The friction factor in fluid flowing through pipe depends upon the relative roughness of the pipe.

Explanation:

•  Relative roughness is defined here as the ratio of the absolute roughness of the pipe's inner wall to the pipe's inner diameter.

• The friction factor is dimensionless, and for turbulent flow over a given type of surface it is roughly constant, being only weakly dependent on Reynolds number and channel geometry.
• The friction factor depends not only on the relative roughness of pipe but also on the Reynolds number.
• When the Reynolds number rises, the friction factor for smooth pipes (like brass tubing) reduces more quickly than it does for pipes with somewhat rough walls.

Hence the  friction factor in fluid flowing through pipe depends upon the relative roughness of pipe.

#SPJ3