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How to get the gradient of a scalar in CFX 11.0

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Old   May 23, 2007, 10:11
Default How to get the gradient of a scalar in CFX 11.0
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sm
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Can anybody let me know how to get a gradient of a scalar variable using CFX 11.0 without User Fortran

With thanx sm
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Old   May 23, 2007, 10:22
Default Re: How to get the gradient of a scalar in CFX 11.
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opaque
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Dear sm,

You can refer to it, by using the same naming convention you see in CFX-Post..

Examples:

Value = Temperature.Gradient X

Source = Pressure.Gradient Y

Additional Variable = MyOtherAV.Gradient Z

Notice that you always access the gradient components explicitly not the gradient vector..

Hope this helps,

Opaque

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Old   May 24, 2007, 02:40
Default Re: How to get the gradient of a scalar in CFX 11.
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sm
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Thanx opaque. Is there a way to get a divergence of a vector in CFX?

sm
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Old   May 24, 2007, 09:58
Default Re: How to get the gradient of a scalar in CFX 11.
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opaque
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Dear SM,

No.. But, what do you want to do with the divergence of vector? Is it a source term in another equation? That determines how you evaluate the term.

You can always (not recommended for source terms) get the gradient and apply the summation of the components:

d/dx + d/dy + d/dz (Phi)..

Opaque..

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Old   May 29, 2007, 03:13
Default Re: How to get the gradient of a scalar in CFX 11.
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sm
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Thanx opaque. I need it for a source term.

sm
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