Questions about porosity-including parameters

[SUJIN]

Hi all,

I understand that porosity in PFLOTRAN is used as a material porosity, i.e., a continuum-scale parameter.
However, in the attached input file, the computational domain is not a rock matrix but the fracture mesh itself.
In this case, I would like to ask whether it is appropriate to use fracture porosity and tortuosity (POROSITY = 1.0, TORTUOSITY = 1.0).

In addition, when I run PFLOTRAN with the attached input file, the transient period is very short and the system reaches steady state very quickly.
However, I would like to obtain a much longer transient period and delay the approach to steady state.
In this case, I would appreciate your advice on which parameters in the current input file should be modified first.

Best regards,
sujin

[Hammond, Glenn E]

Sujin,

As you have not yet received a response, I suggest contacting dfnw...@lanl.gov, as they may have further guidance regarding the DFN network. From my perspective, there in nothing wrong with using a porosity and tortuosity equal to 1 for the fracture.

Glenn

From: pflotra...@googlegroups.com <pflotra...@googlegroups.com> on behalf of SUJIN <sj24...@knu.ac.kr>
Date: Monday, May 25, 2026 at 8:58 AM
To: pflotran-users <pflotra...@googlegroups.com>
Subject: [pflotran-users: 8787] Questions about porosity-including parameters

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