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August 6, 2011, 11:00 |
LES transitional pipe entrance flow
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#1 |
New Member
hasan
Join Date: Aug 2011
Location: Diyarbakır / Turkey
Posts: 3
Rep Power: 15 |
I am a doctarate student and my thesis is the numerical study on transitional pipe flow at the entrance. I am studying numerical for pipe entrance transitional (laminar to turbulent Re= 4000) flow I want to simulate turbulent fluctuation (pressure fluctuation) and then compare them with experimental results of mine. so I have to use LES modelling in FLUENT. I draw the pipe geometry and meshing it in Ansys workbench. now I want to solve it by using LES model in FLUENT. I used smagorinsky lilly model for SGS. but did not run. I study the notes in the HELP menu but didn't find any knowladge about the problem.
*how can I simulate the laminar to turbulent transitional flow in the entrance of pipe. is there any tutorials or notes to help me in this numerical study. await of your helps |
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October 11, 2013, 12:57 |
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#2 | |
Senior Member
Goutam Saha
Join Date: Dec 2011
Location: UK
Posts: 131
Rep Power: 15 |
Quote:
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October 11, 2013, 18:59 |
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#3 |
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,893
Rep Power: 73 |
but what's the problem? the pipe is periodic along the axis? You can fix a pressure gradient in the momentum equation and run the fractional step method, using LES with dynamic Smaogorinsky.
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Tags |
laminar to turbulent, pipe entrance, pipe flow, transient flow |
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