A jet is specified by the diameter of the orifice, the momentum per unit time of...
A jet is specified by the diameter of the orifice, the momentum per unit time of the fluid issuing from the orifice, and the density and viscosity of the fluid. What will be the form of the criterion determining whether the jet is laminar or turbulent?
Homework Answers
The laminarity or turbularity of a fluid is based on its reynolds number.
Reynolds no., Re = (rho)(velocity of flow)(diameter)/(dynamic viscosity)
instead of velocity of flow you can also momentum per unit time which is obtained by multiplying mass rate with velocity.
So if do above calculation and observe the value ,then
if Re < 2300 then the flow is Laminar
Re > 4000 then the flow is Turbulant
between 2300 and 4000 ,the flow is in transition state.
whether the jet is laminar or turbulent can be determined by evaluating the reynold's number for the jet.
Re= Dv*rho/u
D=diameter of orifice
v=velocity
u=viscosity
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