Access to arrays of variables with CCL or perl in command editor

omidiut · October 17, 2011, 07:17

Hi all
I'm trying to simulate flow over airfoil. this airfoil has a moving surface and the relation that specify mesh motion of this surface based on pressure distribution on surface. in this relation i need to access the arrays of pressure in this surface, such as pressure on a line on surface of airfoil. Could you please let me know how to access to the pressure on each node? can i use CCL with command editor CFX-pre ?

Thanks

ghorrocks · October 17, 2011, 17:27

You do not need access to the pressure arrays to do this. You can do this using CEL expressions and lineAve()@location, areaAve()@location and other functions. I suspect you probably want force_x/y/z()@location anyway, not pressure integrals.

omidiut · October 18, 2011, 05:13

Thanks for reply
output of Locator base function such as lineAave()@Location, areaAve()@location is one number. in my problem each node have a different displacement and for specify displacement of each node i need pressure on each node. Could you please let me know how i can do that?

i use an expression like this: LogicalExp= if(x>0[m]&&x<10[m]&&z=1[m],Pressure,0)

my purpose from this expression is the pressure of specified location( 0<x<10, z=1) store in it ( Logical expression).
i tested it, but i think pressure of any node of location that i use in my relation be stored. (not in range 0<x<10 , z=1) !! Do you have any idea?

best regards

October 17, 2011, 07:17	Access to arrays of variables with CCL or perl in command editor	#1
omidiut Senior Member omid Join Date: Apr 2011 Posts: 105 Rep Power: 14	Hi all I'm trying to simulate flow over airfoil. this airfoil has a moving surface and the relation that specify mesh motion of this surface based on pressure distribution on surface. in this relation i need to access the arrays of pressure in this surface, such as pressure on a line on surface of airfoil. Could you please let me know how to access to the pressure on each node? can i use CCL with command editor CFX-pre ? Thanks

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October 17, 2011, 17:27		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	You do not need access to the pressure arrays to do this. You can do this using CEL expressions and lineAve()@location, areaAve()@location and other functions. I suspect you probably want force_x/y/z()@location anyway, not pressure integrals.

October 18, 2011, 05:13		#3
omidiut Senior Member omid Join Date: Apr 2011 Posts: 105 Rep Power: 14	Thanks for reply output of Locator base function such as lineAave()@Location, areaAve()@location is one number. in my problem each node have a different displacement and for specify displacement of each node i need pressure on each node. Could you please let me know how i can do that? i use an expression like this: LogicalExp= if(x>0[m]&&x<10[m]&&z=1[m],Pressure,0) my purpose from this expression is the pressure of specified location( 0<x<10, z=1) store in it ( Logical expression). i tested it, but i think pressure of any node of location that i use in my relation be stored. (not in range 0<x<10 , z=1) !! Do you have any idea? best regards