Variable pressure in Workbench
Variable pressure in Workbench
(OP)
Does anyone know how to put a variable pressure in Workbench. There's a drop down menu to select other options but there's only one option and that's constant.
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Variable pressure in Workbench
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RE: Variable pressure in Workbench
You're going to have to use the insert commands function under the Solution tab. Basic procedure goes like such:
-Define local coordinate system
-Get/define all necessary parameters/arrays
-Define pressure function (SFFUN command)
Have you done this before in Ansys? If not I could try to provide you with a macro which may help you.
-Brian
RE: Variable pressure in Workbench
But while reading the Help Documentation, it states that you need a License Level of ANSYS Professional and above to be able to use the Commands. Which I don't have, so thanks anyways.
RE: Variable pressure in Workbench
I think Ansys 11 will have an function(or table) to give to your pressure, so have patience.
Ansys 11 will come out at the end of feb.
Grtz
Garry
RE: Variable pressure in Workbench
it may be simpler than this, without waiting for future versions (do the best you can with what you have, no?
let's say you have a pressure varying with the coordinate Z of the system CSYS,21 (whatever this coord sys can be).
If you don't want to cope with SFFUN, simply discretize your P-variation law in, say, 10 P values at 10 Z coords.
Then, add a Commands snippet in the Solution and add these commands:
/PREP7
*DIM,P_TABLE,table,10,,,Z,,,21
P_TABLE(1)=p1,p2,...,p10 !pressure values
P_TABLE(1,0)=z1,z2,...,z10 !coord values
cmsel,s,COMPONENT_OF_PRESSURIZED_SURFS
SF,all,pres,%P_TABLE%
allsel
/SOLU
et voilĂ ! The SFFUN method is, by far, more sophisticated, but also more difficult to catch up...
Hope this can help.
Regards