## Fluids

#### Why Pressure is too unrealasitc High??

Subscriber
• Aitor
Subscriber
Assuming that you have chosen velocity-inlet boundary condition at Inlet 1, the solver only uses the value of the velocity. The problem is overspecified if you set both velocity and pressure.n
• Rob
Ansys Employee
You're forcing a fixed amount of flow through the system. Can you double check you're running axi-symmetric over 2d and that you have enough mesh to pick up any flow features. n
Subscriber

Assuming that you have chosen "velocity-inlet" boundary condition at Inlet 1, the solver only uses the value of the velocity. The problem is overspecified if you set both velocity and pressure.https://forum.ansys.com/discussion/comment/110324#Comment_110324

So how can I solve the problem correctly? In
• YasserSelima
Subscriber
Are you using Pressure-based solver?n
• YasserSelima
Subscriber
The resolution of your velocity vectors shows that you have very coarse mesh. Being able to select velocity and pressure at inlet, probably you are using wrong solver.n
Subscriber
I don't get what you mean with picking up any flow features. I'm applying 2D axissymetric. The pressure is high because he want to equalizing the pressure at the the exit of the outlet (-20) ? should I make the inlet, pressure unlet and n

You're forcing a fixed amount of flow through the system. Can you double check you're running axi-symmetric over 2d and that you have enough mesh to pick up any flow features.https://forum.ansys.com/discussion/comment/110328#Comment_110328

give a value of the velocity as a dynamic pressure?n
Subscriber

Are you using Pressure-based solver?https://forum.ansys.com/discussion/comment/110706#Comment_110706

yes preesure solvern
• YasserSelima
Subscriber
Where did you set the 50 Pa pressure?n