Hi all! I have trouble when I define inlet/outlet. I'm confused by how to set pressure. If I want to set the static pressure of Point A (inlet) 50 Pa greater than that of Point B (outlet) and the initial velocity of inlet is zero, how can I put it into practise? Is it right that I specify Mass and Momentum of inlet as Static Pressure with 50 Pa and outlet 0 Pa?

Best regards!

Miko

While this physically makes sense it does not constrain momentum and you may have a lot of difficulty getting a solution as a result. i.e. any momentum flow will give you the solution you want.

I suggest that you run total pressure inlet and mass flow outlet or static pressure outlet until you get the inlet velocity you want.

Neale

Hi Neale!

Thank you for your guideline! But I still have problem to understand what you have said.

1. Why does my setting make sense but be unable to get a satisfied solution? Since I have a little idea on CFX modeling, I hope you can give me some explanation in point.

2. According to your suggest, what's the specfic value I should specify, such as total pressure inlet, mass flow outlet or static pressure outlet?

Thank you for your time!

Miko