fluid movement with friction inside a pipe

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 September 14, 2011, 08:04 fluid movement with friction inside a pipe #1 Senior Member   hamid Join Date: Nov 2010 Posts: 185 Rep Power: 8 Sponsored Links how can one model a movement of fluid inside the tube with considering a friction between fluid and solid (wall of tube)? thank you

 September 15, 2011, 07:50 #2 Senior Member   hamid Join Date: Nov 2010 Posts: 185 Rep Power: 8 Nobody were aware of the answer?, or even some clue would be very much appreciated, thank you

September 15, 2011, 09:30
#3
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zhouquan
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Quote:
 Originally Posted by hamid1 Nobody were aware of the answer?, or even some clue would be very much appreciated, thank you
I guess the stress on the wall can perform the frictional effect

September 15, 2011, 11:30
#4
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Amir
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Quote:
 Originally Posted by hamid1 how can one model a movement of fluid inside the tube with considering a friction between fluid and solid (wall of tube)? thank you
Dear Hamid,

When you set no-slip condition or shear at walls, you're implicitly consider friction, but if you mean contribution of wall roughness in friction, you've to know that wall roughness doesn't have any effect on shear stress in laminar regime but in turbulent regime you can set it in FLUENT; in this regime both wall function and roughness certainly affect shear stress.

Bests,
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Amir

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