Question

complete the flow chart of factor of friction.

Answer 1

Answer:

Explin general, was found to be a function of the Reynolds number and pipe relative roughness. Relative roughness is defined here as the ratio of the absolute roughness ε of the pipe inside wall to the pipe inside diameter:

(2.34)

where:

k = pipe relative roughness, –,

ε = pipe absolute roughness, in,

d = pipe diameter, in.

Typical absolute roughness values are ε = 0.0006 in for new and ε = 0.009 in for used well tubing.

There are several formulae describing friction factors for different flow conditions. Most of them are included in the Moody diagram [18], which is a graphical presentation of Darcy–Weisbach-type f values. Use of this chart, given in Fig. 2.6, is generally accepted in the petroleum industry.

anation: