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Forum: Main CFD Forum

May 11, 2011, 08:23

Replies: 7

Poiseuille flow for Rectangular Annulus

Views: 2,300

Posted By ogloth

my fault -- should have read your original post...

my fault -- should have read your original post more carefully. It depends a bit on what is your objective; if you absolutely need an analytical formulation it will be quite difficult I guess....

Forum: Main CFD Forum

May 11, 2011, 06:10

Replies: 7

Poiseuille flow for Rectangular Annulus

Views: 2,300

Posted By ogloth

Can you please clarify what you mean with "hollow...

Can you please clarify what you mean with "hollow rectangular flow"? I thought it was the flow through a rectangular pipe -- i.e. exactly what eq. 3-48 describes. Btw. I have edition 3, but I assume...

Forum: Main CFD Forum

May 11, 2011, 01:52

Replies: 7

Poiseuille flow for Rectangular Annulus

Views: 2,300

Posted By ogloth

Hi, if the flow is turbulent you can use the...

Hi,

if the flow is turbulent you can use the relations for circular ducts and replace the diameter with the hydraulic diameter Dh = 4*A/P (A: cross section, P: perimeter).

For laminar flow you...

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