boundary layer thickness for pipe flow
 

Hi,

is there any empirical relation for boundary layer thickness for a fully developed turbulent pipe flow

regards Ranjith

Re: boundary layer thickness for pipe flow
 

There is a exact solution of the fully developed pipe flow(Poiseuille Flow), u=1/(4mu)*dp/dx*(r^2-a^2), where mu is dynamics viscosity, dp/dx is the pressure gradient and a is the radius of the pipe. May this help.

Jia

Re: boundary layer thickness for pipe flow
 

Hi,Ranjith!

There is a exact solution of the fully developed pipe flow(Poiseuille Flow), u=1/(4mu)*dp/dx*(r^2-a^2), where mu is dynamics viscosity, dp/dx is the pressure gradient and a is the radius of the pipe. May this help.

Jia

Re: boundary layer thickness for pipe flow
 

thanks jia....I suppose poiseuille's relation applies to fully developed laminar flow while I am interested in fully developed turbulent flow. I have got a relation for turbulent flow called 'seventh root law' and I hope that will give me the boundary layer thickness

ranjith

"boundary layer thickness for a fully developed turbulent pipe flow" ?


In the fully-developed region, the boundary layers of both sides of the pipe have merged and as such the thickness is the entire diameter of the pipe.