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Fluent 12.0, Low Reynolds Number Flows

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Old   January 25, 2010, 17:14
Default Fluent 12.0, Low Reynolds Number Flows
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Anand
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Hi,

I am currently working on Flow simulation in Labyrinth seals using Fluent 12.0 at Texas A&M University College Station. I have the following queries:

I am using a fine mesh and hence Graphics window layout constantly refreshes the screen causing the application to slow down in Fluent 12.0. Every time i pick an option from a dialog, it rebuilds the graphic window layout. Is there any way i could get a Graphic window layout like Fluent 6.3.26 which would not refresh every time ?

Also i have turned on the turbulence models in my simulations, at high Reynold numbers the simulation work fine, however at low Reynold numbers in the laminar range i observer streamlines like in potential flow. Does Fluent 12.0 automatically turn off turbulence models at low Reynold numbers ? The streamlines almost follow the tooth profile in labyrinth seals at low Reynold numbers.

Thanking you,

Sincerely,
Anand Vijaykumar
Graduate Student,
Department of Mechanical Engineering,
Texas A&M University- College Station
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Old   January 26, 2010, 05:16
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Jouke de Baar
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To know how much turbulence you have plot the turbulent intensity (http://www.cfd-online.com/Wiki/Turbulence_intensity), or perhaps turbulent viscosity ratio.
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