Renayald number and turbulent number explain

Reynolds number is used to check whether the flow is laminar or turbulent. It is denoted by strongRe. /strongReynolds Number = inertial force/viscous forcebr /emRe em= ρ V L / μ/embr /ρ = density (kg/m3,)/embr /emV = velocity based on the actual cross section area of the duct or pipe/em em(m/s)/embr /emμ = dynamic viscosity (Ns/m2)/embr /emL = characteristic length (m)/embr /strongLaminar Flow/strong - when emRe < 2300/embr /strongTurbulent/strong Flow- when emRe > 4000/embr /