metal foam in Ansys fluent

Wi A Sa · November 8, 2017, 11:55

Hi
I am a master student, new in metal foams
I would like you to answer my question
i used aluminum foam with water flow
how can I explan PPI in Ansys Fluent ??
and how can i calculate the properties of aluminum to put in Fluent as shown in figure ?

[IMG]

[/IMG]

decoy_ps · April 7, 2021, 14:04

did you get the answer I have same problem as you have?
I am working on copper metallic foam.

LuckyTran · April 7, 2021, 17:34

You enter the properties of the homogeneous pure (non-porous) metal into the solid properties.

The porosity in the user input is the volume fraction (%) of region that is fluid.

Porosity provided by foam makers when given in PPI is a linear count porosity. You need, in addition to PPI, the typical pore size (usually pore diameter) and then you can do some crude algebra to figure out the volume porosity. However, real foam can be tricky to convert PPI to volume porosity without detailed material characterization. You might want to look up some papers related to the particular foam you are using if you want a good empirlca model for converting PPI into vollume porosity.

November 8, 2017, 11:55	metal foam in Ansys fluent	#1
Wi A Sa New Member wi Join Date: Oct 2017 Posts: 5 Rep Power: 8	Hi I am a master student, new in metal foams I would like you to answer my question i used aluminum foam with water flow how can I explan PPI in Ansys Fluent ?? and how can i calculate the properties of aluminum to put in Fluent as shown in figure ? [IMG][/IMG]

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April 7, 2021, 14:04		#2
decoy_ps New Member Pritam Sharma Join Date: Aug 2020 Posts: 4 Rep Power: 5	did you get the answer I have same problem as you have? I am working on copper metallic foam.

April 7, 2021, 17:34		#3
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,675 Rep Power: 66	You enter the properties of the homogeneous pure (non-porous) metal into the solid properties. The porosity in the user input is the volume fraction (%) of region that is fluid. Porosity provided by foam makers when given in PPI is a linear count porosity. You need, in addition to PPI, the typical pore size (usually pore diameter) and then you can do some crude algebra to figure out the volume porosity. However, real foam can be tricky to convert PPI to volume porosity without detailed material characterization. You might want to look up some papers related to the particular foam you are using if you want a good empirlca model for converting PPI into vollume porosity.