Use expression instead of variable

Anna Tian · December 3, 2012, 18:00

Hi,

When I create a contour in CFX-post, I have to choose a variable(like pressure). Then the different value of this variable will be expressed by different colors on the contour. May I ask how to use an expression defined by myself(like distance) instead of a variable? Then I can visualize the value of this expression in the same way.

Thank you very much!

cdegroot · December 3, 2012, 18:11

You can create a new variable and set its definition to the expression that you created.

Crank-Shaft · December 4, 2012, 19:36

Recently, I have been creating new expressions for values such as normalised distances and normalised velocity. Next, it is possible to create a variable and choose the scalar expression as it's source. This allows you to plot everything from surfaces, contours and vectors.

Hope this helps.

December 3, 2012, 18:00	Use expression instead of variable	#1
Anna Tian Senior Member Meimei Wang Join Date: Jul 2012 Posts: 494 Rep Power: 16	Hi, When I create a contour in CFX-post, I have to choose a variable(like pressure). Then the different value of this variable will be expressed by different colors on the contour. May I ask how to use an expression defined by myself(like distance) instead of a variable? Then I can visualize the value of this expression in the same way. Thank you very much! __________________ Best regards, Meimei

December 4, 2012, 19:36		#3
Crank-Shaft Senior Member Ovi Join Date: Oct 2012 Location: Sydney, Australia Posts: 166 Rep Power: 14	Recently, I have been creating new expressions for values such as normalised distances and normalised velocity. Next, it is possible to create a variable and choose the scalar expression as it's source. This allows you to plot everything from surfaces, contours and vectors. Hope this helps. __________________ -- Mechanical Engineering Sydney, Australia

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December 3, 2012, 18:11		#2
cdegroot Senior Member Chris DeGroot Join Date: Nov 2011 Location: Canada Posts: 414 Rep Power: 18	You can create a new variable and set its definition to the expression that you created.