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Re: [Question #698303]: packing porosity for heat capacity scaling according to desired porosity of material

 

Question #698303 on Yade changed:
https://answers.launchpad.net/yade/+question/698303

    Status: Open => Answered

Robert Caulk proposed the following answer:
Hello Ibraheem,

I don’t quite understand the question. Is there an issue with
triax.porosity?

Are you asking “how to scale the heat capacity of thermalengine to simulate
a material with a lower porosity than the dem packing”

If yes, you can scale it by multiplying by the ratio of porosities:

Cp_scaled=Cp*triax.porosity/desired_porosity

Cheers,

Robert


Le mar. 10 août 2021 à 01:11, ibraheem khan <
question698303@xxxxxxxxxxxxxxxxxxxxx> a écrit :

> Question #698303 on Yade changed:
> https://answers.launchpad.net/yade/+question/698303
>
> Description changed to:
> Hi all
>  I am facing a problem while getting porosity for my packing by "
> triax.porosity " and " utils.porosity ".
> I am using JCFpm model of dimension 1 cubic meter randomly packed 2000
> spheres.  it shows a porosity of 0.4372 , when i used density scaling it
> scaled heat capacity too much low.
> e.g  unscaled heat capacity  * desired porosity of material = scaled heat
> capacity * DEM porosity of material.
> if heat capacity is 1090 after scaling it would be 330.
> Need expert suggestion and guidance
> Thanks in advance
>
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