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. |
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