Fully Developed Flow: Laminar vs Turbulent

[Kensiber]

Does the definition of fully developed flow is different for laminar and turbulent?
I understand the fact that the entrance length are different in laminar and turbulent flows, but I believe the definition of fully hydrodynamically developed flow means that the velocity profile (hence momentum) doesn’t change with respect to the stream coordinate.
Please give some insights?
Thanks

[moderator moved the text from summary to body.]

 

[Chestermiller]

That sounds correct to me. Why did you think something else was possible?

 

[Kensiber]

I thought this definition of "fully developed flow" may change with the temperature gradient and concentration gradient between the fluid and pipe wall. Otherwise, it should be defined as follows.
"Except the pressure gradient in the pipe section (which balances shear resistance to sustain uniform velocity profile) all fluid parameters such as temperature and concentration difference must be zero to have a fully developed flow." I couldn't find something similar to this definition in any textbooks. [there are explanations about concentration and thermal boundary layers separately, but couldn't see one description including all these phenomena]

 

[Chestermiller]

Well, if the temperature is varying radially, it must also be changing axially, so the flow can't be fully developed unless the viscosity is independent of temperature. At least, that is my take on this.