Grade efficiency curves in CFX
Dear All,
I want to obtain grade efficiency curves at inlet and outlet of my domain. Can anybody help me? I am using LES for Lagrangian particle tracking. I would be much grateful for your helps as I stuck on finding collection efficiency of my simulation. 
What is a grade efficiency curve?

Dear Glenn,
“When we obtain particle collection efficiency of a poly dispersed sample, there is a range of particle sizes, separate with varying degrees of efficiency. This variation in the efficiency is referred to as the Grade Efficiency Curve”. In my simulation I have to obtain this grade efficiency curve. Actually, still I could not find how to obtain the collection efficiency in particle tracking. I found User FORTRAN can use for this one, but stuck on this stage. Do you have any idea on obtaining collection efficiency and grade efficiency curves? I am really tired of this. Many thanks for your helps. 
The solver should report particle fates by size group  it will tell you how many go out the outlet and how many got trapped. This sounds like what you need for a grade efficiency curve calculation.

Dear Glenn,
Thanks a lot for the reply. I have done a simulations in CFXtutorial to understand particle flow and to find particle mass fractions @ inlet and outlet. (All were steady state simulations) I found in output file, it gives only the mass fraction @ inlet and outlet. For example, in the tutorial "11. Flow through a Butterfly Valve" Particle diagnostics as follows, ================================================== ==================== Particle Diagnostics ================================================== ==================== ++  Particle Mass Flow Summary  ++ Sand One Way Coupled Inlet 1.0000E02 Outlet 1.0000E02 Sand Fully Coupled Inlet 1.0000E02 Outlet 1.0000E02 ++  Particle Momentum Flow Summary  ++ Sand One Way Coupled XComp. YComp. ZComp. Inlet 0.0000E+00 0.0000E+00 4.1087E02 Outlet 4.4985E04 1.9144E03 4.1069E02 Sand Fully Coupled XComp. YComp. ZComp. Inlet 0.0000E+00 0.0000E+00 4.0947E02 Outlet 1.0488E03 4.4581E03 4.0543E02 ++  Particle Forces on Walls  ++ Sand One Way Coupled XComp. YComp. ZComp. Default Domain Default 1.1786E04 3.2385E03 3.0524E03 pipe wall 1.4197E02 3.0213E03 3.1836E04 Sand Fully Coupled XComp. YComp. ZComp. Default Domain Default 5.2943E05 4.0915E03 3.7797E03 pipe wall 1.2482E02 2.6480E03 2.6313E04  But in this tutorial it used poly dispersed sample, and only "mass flow" is given in output, no mass/diameter fractions. I know in this tutorial, all particles should be escape from outlet. My simulation is a cyclone separator (by LES) and still I haven't done simulation on that. Because I am thinking about how to view inlet and outlet grade efficiency considering these tutorial examples. Really appreciate your advises. 
Have a look at the documentation, for particle diagnostics. I think you have to enable this in the output tab in CFXPre.

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