Gradient of a variable calculation in CFX PRE

Luigi · September 11, 2017, 05:42

I need to calculate the gradient of an additional variable and insert it in another equation as source term.
Is there a simple way to calculate the gradient in the CFX PRE, e.g. using CEL expressions?

Opaque · September 14, 2017, 16:10

For example you have a created an additional variable named MyAV, you can then access its spatial gradient components as MyAV.Gradient X, MyAV.Gradient Y, MyAV.Gradient Z as needed in your CEL expressions

Hope the above helps,

Luigi · September 15, 2017, 05:04

Thank you. I found that the CEL expression MyAv.Gradient_x works!

September 11, 2017, 05:42	Gradient of a variable calculation in CFX PRE	#1
Luigi New Member Luigi Gurreri Join Date: Jul 2012 Posts: 18 Rep Power: 14	I need to calculate the gradient of an additional variable and insert it in another equation as source term. Is there a simple way to calculate the gradient in the CFX PRE, e.g. using CEL expressions?

September 14, 2017, 16:10		#2
Opaque Senior Member Join Date: Jun 2009 Posts: 1,873 Rep Power: 33	For example you have a created an additional variable named MyAV, you can then access its spatial gradient components as MyAV.Gradient X, MyAV.Gradient Y, MyAV.Gradient Z as needed in your CEL expressions Hope the above helps, Ashkan Kashani likes this.

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September 15, 2017, 05:04		#3
Luigi New Member Luigi Gurreri Join Date: Jul 2012 Posts: 18 Rep Power: 14	Thank you. I found that the CEL expression MyAv.Gradient_x works!