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viscous layer moves

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Old   September 16, 2008, 05:26
Default viscous layer moves
  #1
Igor-a
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Hi,

In my simulation I have found Mach number 0.2 at the stationary wall. Turbulence model is K-epsilon, y+=10 on the wall. What i have made wrong?

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Old   September 16, 2008, 07:34
Default Re: viscous layer moves
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Igor-a
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I was meaning: speed of air flow at the stationary wall is bigger than zero... it is nonsense, but i dont understand how to get correct result
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Old   September 16, 2008, 11:08
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John S.
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Are you calculating a convervative or hybrid value?
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Old   September 16, 2008, 14:41
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CycLone
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Hi Igor,

The "conservative" wall node values actually represent the half volume next to the wall. The "hybrid" values will give you the boundary value (zero for a no-slip wall wall).

I suggest reviewing the documentation on hybrid and conservative values in the CFX on-line documentation. You can also search this forum for many discussions on the topic.

-CycLone
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Old   September 17, 2008, 03:26
Default Re: viscous layer moves
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Igor-a
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Oh, thank you very much for help )))
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Old   September 17, 2008, 04:36
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Igor-a
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However in Hybrid values contour i see Mach number=0.13 on the no-slip wall...
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Old   September 17, 2008, 15:18
Default Re: viscous layer moves
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CycLone
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Verify the colour details of the surface you are plotting. If the "Conservative" radio button is selected, the plotted values will be zero.

-CycLone
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Old   September 19, 2008, 02:24
Default Re: viscous layer moves
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Igor-a
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Sorry , i was wrong, my problem was influence of friction on matched wall

Thankk for help!
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