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ParticulateFlow / LIGGGHTS-PFM

This is an academic adaptation of the LIGGGHTS software package, released by the Department of Particulate Flow Modelling at Johannes Kepler University in Linz, Austria http://www.jku.at/pfm
GNU General Public License v2.0
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Coarse grained method applied in heat conduction model #10

Closed ChevalierXD closed 2 years ago

ChevalierXD commented 2 years ago

Hello,

I am trying to use the LIGGGHTS-PFM 21.11 to model coarse-grained particles in terms of flow and heat transfer process, but I failed to implement the model on LIGGGGHTS. The error is reported as: "ERROR: The following model does not yield consistent results with coarse-graining: heat/gran (/home/561/dx4858/CFDEM/LIGGGHTS/src/fix_heat_gran_conduction.cpp:202)"

The notable changes of the version have mentioned that the coarse-graining factors in scalar transport equation (e.g. used for heat conduction) have been fixed. Therefore, I want to know whether the version can support coarse-grained method in heat transfer models and how to implement it properly.

Many thanks for your time and help. Best regards. Dan

danielque commented 2 years ago

You may add the option model_check warn to the coarsegraining command in your input script to turn the error into a warning. The reason for the error/warning in the first place is that heat transfer doesn't scale exactly when applying the coarse graining model, however, the behavior is quite similar.

ChevalierXD commented 2 years ago

Many thanks for your help and time.

Best regards, Dan