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DEM - Post Processing : Particle Mass Flow Rate

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Old   July 25, 2014, 14:22
Default DEM - Post Processing : Particle Mass Flow Rate
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Yesaswi
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Hello everybody,

I am simulating the flow of granular materials in a pipe using STAR CCM+. The particles are densely packed together and they are of minute size of 0.3mm. The pipe diameter is also as small as 10mm. I used DEM and Lagrangian models to simulate the problem.

But I couldn't find a way to measure the Particle Mass flow Rate through the pipe. I tried to check with the scalar plots and scalar function, but nothing worked for me.

So, it would be really helpful if anyone suggest me to find the mass flow rate of the particles across a cross section of the pipe

Thank You.
Yesaswi
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Old   July 25, 2014, 17:37
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You need to turn on boundary sampling to accomplish this.
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Old   August 26, 2014, 16:07
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Quote:
Originally Posted by me3840 View Post
You need to turn on boundary sampling to accomplish this.
Thank you for the reply.

I switched on the boundary sampling and solved, but I couldn't find a way where I can find the instantaneous flow rate of the particles across a plane. I even tried with track files model, but I couldn't find the exact way of how I can find the instantaneous mass flow rate across a plan

So could you tell me what else should I do? The attached image gives the details of my problem. The particles flow out of the orifice. I need to plot a exit mass flow rate cure. So please help me out.

Thank you very much for the help.
Yesaswi
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Last edited by yesaswi92; August 26, 2014 at 17:10.
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Old   August 27, 2014, 07:10
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one way would be to split the model into two regions with an interface at the measurement location and then use the boundary sampling there
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Old   August 27, 2014, 15:23
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Thanks a lot!!

I did use boundary sampling in the way you suggested and it worked.

Thank You
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