Reply To: Calculation of a centrifugal pump in Fluent

[C N]

Hello Javat,

To avoid getting negative pressure , you must set the appropriate operating pressure.

The operating pressure mainly depends on 

Density of the fluid and mach number . 

I am attaching the Various recommendation settings on how to accurately set the operating pressure.

For more information kindly refer the attached user guide link

8.14. Operating Pressure (ansys.com)- Detailed information about pressure is mentioned.

I hope this helps you.

Thanks,