How to set up a CFX Pre?
hi All,
I am int interested to see flow behavior on wings and wing with winglet. I have the following test conditions : Stagnation temperature =322 K dynamic pressure : 41KN/M^2 Mach = 0.8 Re =17 million per unit length. with these test conditions ,how to apply BC in CFX Pre? |
Hi,
Look up the definition of all these terms. Then solve a simultaneous set of equations to determine what they mean in terms of pressure, velocity, density etc. Then you apply the boundary in CFX-Pre, probably in terms of velocity and temperature inlet and pressure outlet. Glenn Horrocks |
Hi ghorrocks,
Thanks for your reply. I able to caalculate velocity and temperature from the availble data. I am not sure on exit boundary condition,because the data does not provide any thing on outlet. can I use relative static pressure as zero at outlet? |
Hi,
The exit pressure will be whatever the ambient pressure is. Unless you know otherwise then I would guess 1 atm absolute. You would then use 1 atm as your reference pressure and set the exit pressure to 0 gauge pressure. Glenn Horrocks |
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