What is Reynold's number ? Give its significance.

Explanation

It is a dimensionless number which determines the nature of the flow of fluid through a Reynold.s number pipe. is given by, `R_(c)= (rho v D)/(eta)`
`R_(c) lt 1000`- stream line
`R_(c) gt 2000`-- turbulent
`1000 lt R_(c) lt 2000`-- unsteady