CFD analysis on regenerative pump using ANSYS CFXs
 

Dear friends, I am conducting a CFD analysis on regenerative pump using ANSYS CFX (MRF approach). Please see the model attached. http://s9.postimg.org/cugg0fogv/image.jpg
The model consists of 3 regions- inlet domain ,impeller domain and outlet domain.
Impeller is rotating at 2800 rpm. At inlet , total pressure =101953pa and at outlet, mass flow rate =0.76kg/s .
The pump is expected to produce 25 m head.But from analysis it is found that ,pressure at the outlet of the pump is negative.
See the pressure distribution> http://postimg.org/image/7t53erj3j/
Can anyone help me with this problem...
Thanks in advance.. :)

FAQ: http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F

Hi Rakesh!

I am facing the same issue. Was it resolved in your case? if yes, then please do help.

You will need to show details of cfd domain geometry, boundary conditions and interface modelings.