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Yplus adaptation grid

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Old   March 10, 2008, 06:43
Default Yplus adaptation grid
  #1
Amel
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Hi, I want to use y+ adapt but it notes me always : cells to coarsen not to refine and my mesh isn't fine at all !!! it is so illogical to have large cells and the fluent want to coarsen them, perhaps I forgot or I must change something in the allowed min and max, please help.
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Old   March 11, 2008, 03:48
Default Re: Yplus adaptation grid
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Syed Shabbar Raza
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as i know,

y+ value depends upon the flow behaviour, like velocity, density and viscosity etc,

so first of all calclute a y+ value analatically for your geometry. and give this value in fluent as max.

u can also calculate you y+ by pressing compute button in y+/y*.

for different turbulence model its value differes.

u can also you wall function.

dear read fluent manuall, specially SA model and K-E model and also detail of y+
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Old   March 11, 2008, 06:00
Default Re: Yplus adaptation grid
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amel
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Thanks!
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