Question

1. Reynolds number can be expressed by which of the following formula -
(a) Re=Dup/n (b) Re=2Dup/n (c) Re= 3Dup/n (d) Re=Dup/2n
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Answer 1

Answer:

(d)

Explanation:

it should be this answer

Answer 2

Reynolds number helps us to find out the flow pattern of different fluids.

Explanation:

The formula of the Reynolds number is:- $Re =\frac{Dup}{n}$. Here,

n= fluid dynamic viscosity.

p= fluid density

u= fluid velocity

D= pipe diameter.

If the value Re is below 2000, the flow is laminar flow. If it is between 2000-4000, the flow is in the transition zone and if it above 4000 the flow is turbulent.