DPM Cyclone Problem

hkrueger · August 6, 2013, 15:26

Hello,

I constructed a simulation of cyclone with fluent but it's not working as it should.

Boundary conditions are as follows:

structured grid
RSM
second order upwind
velocity inlet
pressure outlet
different surface-DPM-injections
UDF to get information about the condition on different planes

My problem is that the cyclone does not have the efficiency it should have with particles smaller than 1,5e-06 and i can't see what error i could have made.

I'd be grateful for any help or advice.

hkrueger · August 11, 2013, 06:20

my mistake was to choose the spherical drag law.

particels under diameter 6,7 E-6m (standard air) has to use the Stokes-Cunningham Law.

August 6, 2013, 15:26	DPM Cyclone Problem	#1
hkrueger New Member Krüger Henry Join Date: Apr 2013 Posts: 2 Rep Power: 0	Hello, I constructed a simulation of cyclone with fluent but it's not working as it should. Boundary conditions are as follows: structured grid RSM second order upwind velocity inlet pressure outlet different surface-DPM-injections UDF to get information about the condition on different planes My problem is that the cyclone does not have the efficiency it should have with particles smaller than 1,5e-06 and i can't see what error i could have made. I'd be grateful for any help or advice.

August 11, 2013, 06:20		#2
hkrueger New Member Krüger Henry Join Date: Apr 2013 Posts: 2 Rep Power: 0	my mistake was to choose the spherical drag law. particels under diameter 6,7 E-6m (standard air) has to use the Stokes-Cunningham Law. ghost82 and crevoise like this.

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