[zona]

Hi, I've been working on a CFD simulation on a pumps for some time now, but I have some doubts about the results I'm getting from it.
This is my process of calculation
1. make 3D model is SolidWorks
2. create the mesh in ANSYS
3. make a simulation boundary conditions ShearStress, MassFlow in, Static Preasure outlet (I put hier 0bar is this OK or shoul I put normal preasure???), and I use frozen rotor
4.finally after the calculations I use turbo macro Liquid Pump Performance to calculate the head and efficiency, (I get strange result for the efficiency anny ideas why????)
5. I repeat the calculations for 5-6 different flows and get head and efficiency and make Q-H and Q-eta diagrams in EXCEL
.
is this a good way to works
is there an automated way to calculate more than one point at once and to get an automated Q-H diagram...
- what is better for pumps Shear Stress or K-epsilon (turbulence model)
what is reference radius and reference height in the Liquid Pump Performance calculation (I change them but nothing happends!)