Lecture%2018_Internal%20Flow

Lecture%2018_Internal%20Flow - ME309 Fall 2009 Lecture 18:...

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Unformatted text preview: ME309 Fall 2009 Lecture 18: Internal Incompressible Viscous Flow Andrew Lee Maurice J. Zucrow Laboratories Purdue University West Lafayette, Indiana Internal Flow Internal flows are completely bounded by solid surfaces (e.g. pipes, ducts, nozzles, diffusers, etc) They may be laminar or turbulent "Fully developed" flow "Entrance length" 10/9/2009 Andrew Lee 2 Flow Between Parallel Plates Many fluid mechanics problems involve a flow through a narrow space (e.g. piston-cylinder) In these problems, flows are often modeled as if they are flowing through parallel plates Analytical solutions are obtainable for laminar flows 10/9/2009 Andrew Lee 3 Flow Between Parallel Plates Shear-driven: no pressure gradient, one plate moving relative to the other y x h U Find velocity profile and shear stress distribution if the flow is fully developed, incompressible, Newtonian, and steady 10/9/2009 Andrew Lee 4 Flow Between Parallel Plates Pressure-driven: both plate stationary, constant pressure gradient y x h Find velocity profile and shear stress distribution if the flow is fully developed, incompressible, Newtonian, and steady 10/9/2009 Andrew Lee 5 ...
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This note was uploaded on 04/28/2010 for the course ME 309 taught by Professor Merkle during the Spring '08 term at Purdue.

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