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June 29, 2015, 23:05 |
Eulerian phase diameter-importance?
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#1 |
Senior Member
Join Date: Mar 2014
Posts: 375
Rep Power: 13 |
How is specifying the secondary phase particle diameter important, if the secondary phase is a Eulerian phase as well?
Does it have an effect on the volume fraction of the Eulerian phase if that is the only thing I am interested in? In a single phase simulation, we do not specify the diameter of e.g air molecules/particles, why is it needed for the secondary phase in the Eulerian model then? Thanks |
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October 28, 2015, 05:21 |
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#2 |
New Member
Jakub Pola
Join Date: Feb 2011
Posts: 22
Rep Power: 15 |
Hi,
as far as I understand the Euler-Euler approach is dedicated to simulate two-phase flows in which one of the fractions is particle like component. The equations assumes that it have spherical shape. Gidaspow (1994) presents the equations for i.e. shear viscosity where this radius is present. The diameter of the particles can have influence i.e. on drag force of granular phase resulting in different behaviour of this phase under given circumstances. |
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November 20, 2015, 04:10 |
2 phase flow
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#3 |
New Member
Mohammed
Join Date: Nov 2015
Posts: 4
Rep Power: 11 |
Dear All, please how to simulate flow of water and AL2O3 inside a tube as a mixture model?
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November 20, 2015, 04:33 |
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#4 |
Senior Member
Join Date: Mar 2014
Posts: 375
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Err, you have to be more specific. Depending on the fraction of the aluminium oxide you can simulate it with either the Eulerian or Lagrangian approach. See the tutorials for help, this is a simple case and you will find all the help you need.
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November 20, 2015, 14:54 |
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#5 |
New Member
Mohammed
Join Date: Nov 2015
Posts: 4
Rep Power: 11 |
thank you, but how can I get the thermophysical properties of the nanoparticles that must I define as a secondary phase in ansys fluent
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November 21, 2015, 00:43 |
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#6 |
Senior Member
Join Date: Mar 2014
Posts: 375
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Not sure what thermophysical properties are, but new particles types can be created in the materials tab if you know the exact particle properties or there is also a long list of particles to choose from.
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November 21, 2015, 02:51 |
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#7 |
New Member
Mohammed
Join Date: Nov 2015
Posts: 4
Rep Power: 11 |
from where can I get this list please
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November 22, 2015, 03:23 |
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#8 |
Senior Member
Khalid Baker
Join Date: Mar 2009
Location: IRAQ
Posts: 168
Rep Power: 17 |
Abualhassan Al2O3 and base fluid (water) properties can predicted reference to temperature at inlet boundary?what temperature you set?
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November 22, 2015, 05:22 |
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#9 |
New Member
Mohammed
Join Date: Nov 2015
Posts: 4
Rep Power: 11 |
the inlet temperature is 293K
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November 22, 2015, 05:47 |
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#10 |
Senior Member
Khalid Baker
Join Date: Mar 2009
Location: IRAQ
Posts: 168
Rep Power: 17 |
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