Dusty Gas Model (DGM) for transient atmosphere flow in lunar regolith

[Hunter Danque]

I am a PhD Candidate at the Colorado School of Mines. I would like to develop a model of transient atmospheric events on the moon to identify the depth the multi-component gases penetrate the porous lunar regolith. I believe the Dusty Gas Model may be appropriate to solve this, which led me to Cantera. I see one script example but have not found documentation or examples to explain what the script is doing. If there is a Cantera DGM expert user out there, I would like to discuss how to learn Cantera's implementation of DGM and identify the inputs I need to set up a lunar gas regolith flow model. 

Thanks,

-Hunter 

[Ray Speth]

Hi Hunter,

The example shown using the DGM is indeed a bit light on details. There is more information if you look at the documentation for the DustyGasTransport class, in particular the method getMolarFluxes (also known as molar_fluxes in the Python interface). As far as I understand the implementation in Cantera, the main capability provided by Cantera is the calculation of the DGM multicomponent diffusion coefficients that are used in this expression.

You may also want to take a look at this paper by Zhu et al. (2005) which is closely related to Cantera’s implementation of the DGM. Please let us know if you have any further questions. And if you’re able to get this working, I’d like to suggest that this would make a really interesting example to add or supplement the current one.

Regards,
Ray

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