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-   -   efficiency of each particle size at hydrocyclone outlets (http://www.cfd-online.com/Forums/fluent/72789-efficiency-each-particle-size-hydrocyclone-outlets.html)

Morteza2062 February 18, 2010 02:11

efficiency of each particle size at hydrocyclone outlets
 
Hi

I'm simulating the separation of two sizes of particles in a hydrocyclone using dpm and I'm having problem measuring the flow rate of each kind at each outlet.
I injected 2 different kind of particles at different flow rates from inlet and I can not find any where in the fluent to get the outlet flow rates.

I've read some posts suggesting using report, but it doesn't have any useful information for me. It just has some information about the density and size of the inlet particles and number of injected particles.

Can somebody help me with this?


Thanks in advance,

Allan Walsh February 18, 2010 13:45

Are you truly talking about two different sizes (i.e. diameters)? or kinds (other factors like density or wall reflection might vary)?
If it is diameter, why can't you simply inject particles with diameter(s) A, see what fraction are collected (i.e number injected and number escaped at collection outlet) then inject particles with diameter(s) B. This gives you collection efficiency for A and B.

Morteza2062 February 18, 2010 19:17

Their differences are on their diameters and densities( two different kind of particles with different sizes they are).
The main problem I have is some people on their posts suggest using the "display/particle tracking/particle concentration" to get the separation but it doesn't give me reliable results (whenever I start the saved simulation it gives me a relatively higher number of particles from the overflow rather than underflow at the first).
And some other people say use "report", but there is no useful information in that section for me.

Do you have any idea for me to get through this?

Thanks in Advance,

Morteza


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