[bmax2]

Hi everyone I'm trying to model a conic filter in starccm+.
The infos i have about this filter are: porosity, flowrate, surface area and pressure drop through the filter.
I'm modeling it using the porous baffle media (shear stress based). How can i set the pressure drop to be exactly the one specified in the data sheet i have been given? I tried following the ansa help guide and Ergun equations but when i run the simulation with the numbers i found for Pi (porous inertial resistance) and for Pv (porous viscosity resistance), it gives me meaningless results.
Thanks in advance for any reply

[Maddin]

Did you check the help? "Examples of Setting Porous Resistance Properties"

[cwl]

Originally Posted by bmax2

Hi everyone I'm trying to model a conic filter in starccm+.
I tried following the ansa help guide and Ergun equations

From what I remember - there is a "ρ·" part in pressure drop formulation for the porous baffle resistance. Did you check that? - Why would you use ANSA help guide while setting up the simulation in STAR-CCM+?

Originally Posted by bmax2

... it gives me meaningless results.

I'm afraid that without any details the question is also meaningless - like "My car won't start".

[bmax2]

Originally Posted by cwl

From what I remember - there is a "ρ·" part in pressure drop formulation for the porous baffle resistance. Did you check that? - Why would you use ANSA help guide while setting up the simulation in STAR-CCM+?


I'm afraid that without any details the question is also meaningless - like "My car won't start".

because i was using ansa while posting this i'm sorry i got confused lol, i used starccm+ guide ofc. The meaningless results are that starccm+ with my Pi and Pv, is seeing the filter like a wall, i can note it from the velocity and pressure plots. I did check all the starccm+ help manual and this forum too so my question now would probably be: are the infos i have about the filter enough to model it or do i have to check for more? Now i used all the infos i found on the data sheet of the filter

[bmax2]

Originally Posted by Maddin

Did you check the help? "Examples of Setting Porous Resistance Properties"

yes i checked everything on the help also on this forum too, and on some other people's work with filters