Average pressure Outlet BC in CFX

PranjalNewton · May 24, 2016, 05:18

Hi there!

I'm simulating artery blood flow by ANSYS-CFX 2-way FSI. I can only see two options for pressure outlet: Outlet and Opening. To model pulsating fluid, I've selected Opening condition. However, the pressure is fixed throughout the simulation. How can I specify that the pressure as an average value over the simulation time as can be done in FLUENT?

Thanks

Lance · May 24, 2016, 06:09

Quote:

Originally Posted by PranjalNewton

How can I specify that the pressure as an average value over the simulation time

Are you asking how to set a constant value as a boundary condition? Just set it?
Or do you want to have a time-varying pressure boundary condition? See e.g. http://www.cfd-online.com/Forums/cfx...dary+vary+time

PranjalNewton · May 24, 2016, 06:39

Thanks for the reply. The problem is solved. Turns out I needed to use STATIC pressure and direction option!

P.S. If anyone get's same doubt in future, refer to following manual sections:
https://www.sharcnet.ca/Software/Ans.../i5500692.html (2.3.3. Using Inlets, Outlets and Openings)
https://www.sharcnet.ca/Software/Ans.../i1301250.html (2.6.1. Mass and Momentum)

May 24, 2016, 05:18	Average pressure Outlet BC in CFX	#1
PranjalNewton Member Pranjal Singh Join Date: Sep 2015 Posts: 34 Rep Power: 10	Hi there! I'm simulating artery blood flow by ANSYS-CFX 2-way FSI. I can only see two options for pressure outlet: Outlet and Opening. To model pulsating fluid, I've selected Opening condition. However, the pressure is fixed throughout the simulation. How can I specify that the pressure as an average value over the simulation time as can be done in FLUENT? Thanks

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May 24, 2016, 06:39		#3
PranjalNewton Member Pranjal Singh Join Date: Sep 2015 Posts: 34 Rep Power: 10	Thanks for the reply. The problem is solved. Turns out I needed to use STATIC pressure and direction option! P.S. If anyone get's same doubt in future, refer to following manual sections: https://www.sharcnet.ca/Software/Ans.../i5500692.html (2.3.3. Using Inlets, Outlets and Openings) https://www.sharcnet.ca/Software/Ans.../i1301250.html (2.6.1. Mass and Momentum)