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second derivative in udf

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Old   June 8, 2005, 12:56
Default second derivative in udf
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Hello all,

I want to add a source term for a user defined scalar, lets say G: dG/dx + dG/dy + dG/dz. How can I do this in a UDF ? Is this maybe the reconstructin gradient ? If not, does anyone know what the reconstruction gradient is ?

Thanks, Dirk
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