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Old   September 22, 2008, 04:39
Default natural convection square cavity
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tommy
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Hi !

I'am doing some simulation about natural convection in a square cavity by using cfx 10.0. Just for curiosity, i did a few of calculation using a 3d box with 10 elements in the direction of the thickness and with simmetric boundary conditions on each side in the direction of the thickess. The solution present also a non zero velocity in the direction of this thickness in some grid point. Why ??
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Old   September 22, 2008, 18:39
Default Re: natural convection square cavity
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Glenn Horrocks
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Hi,

Are you saying there is velocity across a symmetry plane? Or are you saying the flow is not planar? Many convection driven flows break up into non-planar flows so this is to be expected.

Glenn Horrocks
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Old   September 23, 2008, 03:42
Default Re: natural convection square cavity
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tommy
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Hi !

The predictions show a not planar flow !
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Old   September 23, 2008, 19:31
Default Re: natural convection square cavity
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Glenn Horrocks
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Hi,

Well, as I say this is normal for convection driven flows. They only remain planar at very low Rayliegh numbers.

Glenn Horrocks
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