[jins9158]

I used pressure change interface to consider pressure difference about thin filter instead of using porous model.

First, I made 1D function by using userfucntion (reference image1) and I made Interface between 2 domain.

Finally I applied 1d function's about pressure drop in surface of interface between 2 domains and I simulated.

When I reviewed, I knew that the result is wrong!

Inlet velocity is 3m/s(reference image3) and It means that interface pressure of difference should be about 70 ~ 80Pa.
(Inlet velocity 2.8m/s > -57[Pa], Inlet velocity 3.5m/s > -81[Pa])

But interface pressure of difference was very small (Pressure is about 3Pa.. reference image3)

I reviewed why the result is wrong for days. But I couldn't find pressure change interface information in google, customer portal, ansys cfx example, you-tube, CFD online and so on.

So, I really need to help.

Please give me advice

Thank you


1. image1 > cfx pre image & userfunction image
image1.jpg

2. image2 > interface pressure change
image2.jpg

3. image3 > Velocity & Pressure result image
image3.jpg

4. output file
CFX_001.txt