2. (Spts) Which one of the statement is not correct to estimate the entrance len

Question

2. (Spts) Which one of the statement is not correct to estimate the entrance length Le in pipe flow: a) Measuring the distance from the entrance to the location where the pressure gradient is unchanged b) Using the empirical formula Le=.06"Re"D when Re, the flow Reynolds number, is less than 2400 and D is the pipe diameter c) Using the empirical formula Le-4.4 Re6 D when Re, the flow Reynolds number, greater than 2300 and D is the pipe diameter d) Measure the difference in the pressures at entrance and exit

Explanation / Answer

All option a,b and c are correct regarding entrance length in pipe flow

Incorrect option

(d)

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