Massflow report/monitor in CCM+

erazz · December 28, 2009, 12:31

Hello,

I'm simulating a radial impeller. I've modeled a single channel with periodic BC's and so far I'm getting very good results. The simulation converges quickly, the velocities and pressures are right but the massflow is about 1/100 if the expected values.

Even when I use a massflow inlet and specify the correct flow the report shows low values.

I'm pretty sure that the results are physical but I'm doing something wrong while creating the report/monitor.

Any ideas?

JBeilke · December 29, 2009, 02:36

Check the size of your domain. Maybe there is something wrong with meters and feet.

erazz · December 30, 2009, 09:34

Hi beilke,

I've checked and the domain is fine. The speeds and pressures are also fine.

Is the massflow averaged over the entire patch or is it indicative of only one cell?

erazz · December 31, 2009, 02:30

Solved it!

I was using area averaged and not massflow report.

December 28, 2009, 12:31	Massflow report/monitor in CCM+	#1
erazz New Member Erez Raviv Join Date: Mar 2009 Posts: 8 Rep Power: 16	Hello, I'm simulating a radial impeller. I've modeled a single channel with periodic BC's and so far I'm getting very good results. The simulation converges quickly, the velocities and pressures are right but the massflow is about 1/100 if the expected values. Even when I use a massflow inlet and specify the correct flow the report shows low values. I'm pretty sure that the results are physical but I'm doing something wrong while creating the report/monitor. Any ideas?

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December 29, 2009, 02:36		#2
JBeilke Senior Member Joern Beilke Join Date: Mar 2009 Location: Dresden Posts: 452 Rep Power: 19	Check the size of your domain. Maybe there is something wrong with meters and feet.

December 30, 2009, 09:34		#3
erazz New Member Erez Raviv Join Date: Mar 2009 Posts: 8 Rep Power: 16	Hi beilke, I've checked and the domain is fine. The speeds and pressures are also fine. Is the massflow averaged over the entire patch or is it indicative of only one cell?

December 31, 2009, 02:30		#4
erazz New Member Erez Raviv Join Date: Mar 2009 Posts: 8 Rep Power: 16	Solved it! I was using area averaged and not massflow report.