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discrete phase method (volume fraction)

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Old   March 13, 2010, 16:28
Default discrete phase method (volume fraction)
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heidar alavikia
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Hello every body

I'm trying to simulate nanofluids in fluent by discrete phase method.
But my problem is that I don't know how I can determine the volume fraction of nanoparticle in this model.

Please help me if it is possible for you.
thanks
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Old   November 30, 2013, 07:52
Default DPM for nanolfuid
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Goutam Saha
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Could you tell me how to setup discrete phase model for nanofluid in fluent?

Thanks
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Old   November 30, 2013, 08:57
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why are u interested in the volume fraction of the particles at the injection when you are modeling everything with langrangian approach: you nedd mass flow rate, diameter injection speed and nothing more.
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Old   December 2, 2013, 07:49
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Goutam Saha
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Quote:
Originally Posted by Zaktatir View Post
why are u interested in the volume fraction of the particles at the injection when you are modeling everything with langrangian approach: you nedd mass flow rate, diameter injection speed and nothing more.
Thanks for your reply. I considered one phase as a water phase and another phase as a nanoparticle phase. Now I want to do simulation for different volume fraction, phi = 1 to 5 %. This is the Lagrangian approach but how to modelled discrete phase for different volume fraction?

Kind Regards

Goutam
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Old   December 2, 2013, 14:42
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You are still talking about the volume fraction: in DPM you will get that if you are saving the result of lagrangian tracking on the euler grid that means by activating the mean and RMS values. In the injection you have to adjust the mass flow rate! DPM limitation is 10%
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Old   December 3, 2013, 07:05
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Goutam Saha
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Quote:
Originally Posted by Zaktatir View Post
You are still talking about the volume fraction: in DPM you will get that if you are saving the result of lagrangian tracking on the euler grid that means by activating the mean and RMS values. In the injection you have to adjust the mass flow rate! DPM limitation is 10%
Thanks. I understood the problem. I am working on laminar flow. I made a setup, but still don't get the correct result. Could you please give me your email address then I will send you my (.cas) fluent file so that you can check my setup if you have time.

Thanks for your cordial reply.

Kind Regards

Goutam
Email: g.saha.1@research.gla.ac.uk
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Old   December 3, 2013, 15:42
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forward the setup to the ansys support
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