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Hammond, Glenn E
,
SUJIN
4
Apr 13
Re: [pflotran-users: 8751] ERROR during Correcting UGE volumes with fracture apertures
Dear Glenn, Would this mean that the current error should be investigated in the generation stage
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Re: [pflotran-users: 8751] ERROR during Correcting UGE volumes with fracture apertures
Dear Glenn, Would this mean that the current error should be investigated in the generation stage
Apr 13
sahil wani
,
Hammond, Glenn E
3
Apr 12
Help with THC simulation setup for natural hydrogen transport
Dear Glenn, Thank you for the pointers to the multiphase transport and anisothermal tests. I switched
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Help with THC simulation setup for natural hydrogen transport
Dear Glenn, Thank you for the pointers to the multiphase transport and anisothermal tests. I switched
Apr 12
Mickey Rush
,
Hammond, Glenn E
3
Apr 11
Heterogeneous Initial Conditions
Hi Glenn, Thanks for the quick response! I had wondered about trying the checkpoint file approach – I
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Heterogeneous Initial Conditions
Hi Glenn, Thanks for the quick response! I had wondered about trying the checkpoint file approach – I
Apr 11
chenyao su
,
Hammond, Glenn E
8
Apr 11
Issue using OSRT for scCO2 reactive transport with v7.0
Chenyao, When using OSRT, reducing the time step size can help decrease the associated error. I
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Issue using OSRT for scCO2 reactive transport with v7.0
Chenyao, When using OSRT, reducing the time step size can help decrease the associated error. I
Apr 11
Neelarun Mukherjee
,
Hammond, Glenn E
2
Apr 11
O2 aeration / gas exchange in ATS-PFLOTRAN coupling
Neel, To achieve the desired functionality, you can modify reaction_sandbox_equilibrate.F90 so that
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O2 aeration / gas exchange in ATS-PFLOTRAN coupling
Neel, To achieve the desired functionality, you can modify reaction_sandbox_equilibrate.F90 so that
Apr 11
Won Woo Yoon
,
Hammond, Glenn E
6
Apr 11
pH error in OSRT
Won Woo, At this time, I recommend using GIRT for your simulations. I am unable to address the OSRT
unread,
pH error in OSRT
Won Woo, At this time, I recommend using GIRT for your simulations. I am unable to address the OSRT
Apr 11
Isaac Prud'homme
,
Hammond, Glenn E
4
Apr 11
Simple Sulfate Reduction Model Example
Isaac, I've swapped the species as discussed; however, I suggest revising the reaction
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Simple Sulfate Reduction Model Example
Isaac, I've swapped the species as discussed; however, I suggest revising the reaction
Apr 11
Bisesh Joshi
,
Hammond, Glenn E
6
Apr 11
Passive O2 gas diffusion on Richards mode for hypoxic riperian transect
Bisesh, In contexts outside of reactive transport, the diffusion coefficient applies specifically to
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Passive O2 gas diffusion on Richards mode for hypoxic riperian transect
Bisesh, In contexts outside of reactive transport, the diffusion coefficient applies specifically to
Apr 11
reisi...@gmail.com
,
Hammond, Glenn E
9
Apr 11
Fracture Modeling
Fatemeh, If your simulation involves free-phase CO₂ within the brine, I recommend using SCO₂ mode.
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Fracture Modeling
Fatemeh, If your simulation involves free-phase CO₂ within the brine, I recommend using SCO₂ mode.
Apr 11
Leo
,
Hammond, Glenn E
3
Apr 6
Unexpected matrix diffusion and inlet artifact in fracture–matrix reactive transport (GIRT mode)
Dear Glenn, Thank you very much for your answer My problem has indeed been solved by following your
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Unexpected matrix diffusion and inlet artifact in fracture–matrix reactive transport (GIRT mode)
Dear Glenn, Thank you very much for your answer My problem has indeed been solved by following your
Apr 6
sahil wani
,
Hammond, Glenn E
4
Apr 2
Error in Plfotran code
Thanks, Glenn. The issue got resolved once I reinstalled it. I think in the previous version, I
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Error in Plfotran code
Thanks, Glenn. The issue got resolved once I reinstalled it. I think in the previous version, I
Apr 2
Micaela Raviola
,
Hammond, Glenn E
9
Apr 1
Seeking advice on saltwater intrusion modelling with unstructured meshes
Hi Glenn, I've managed to create a reasonable model (using GENERAL) of my simplified aquifer by
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Seeking advice on saltwater intrusion modelling with unstructured meshes
Hi Glenn, I've managed to create a reasonable model (using GENERAL) of my simplified aquifer by
Apr 1
Bisesh Joshi
,
Hammond, Glenn E
3
Mar 23
Focusing only on few solutes from primary species in source_sink approach
Thank you so much for taking the time to respond to my query, Glenn. Do you have any suggestions on
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Focusing only on few solutes from primary species in source_sink approach
Thank you so much for taking the time to respond to my query, Glenn. Do you have any suggestions on
Mar 23
Syed Hassan Ahmed
,
Michael Nole
8
Mar 22
SCO2 MODE boundary “Missing dof” error with RATE MASS_RATE
Looks like it's an issue with your transport constraint at initialization. I recommend sending
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SCO2 MODE boundary “Missing dof” error with RATE MASS_RATE
Looks like it's an issue with your transport constraint at initialization. I recommend sending
Mar 22
chenyao su
Mar 20
Issue using OSRT for scCO2 reactive transport
Hello everyone, I would like to confirm whether the OSRT method is still supported in simulations of
unread,
Issue using OSRT for scCO2 reactive transport
Hello everyone, I would like to confirm whether the OSRT method is still supported in simulations of
Mar 20
chenyao su
,
Hammond, Glenn E
3
Mar 20
Unexpected Pressure Drop at the Top of the Domain When Chemistry Module Is Enabled in CO₂ Two-Phase Simulation
Thank you for your advice. I'll give it a try. 'Hammond, Glenn E' via pflotran-users <
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Unexpected Pressure Drop at the Top of the Domain When Chemistry Module Is Enabled in CO₂ Two-Phase Simulation
Thank you for your advice. I'll give it a try. 'Hammond, Glenn E' via pflotran-users <
Mar 20
Heeho Park (Pakodot)
, …
Wenyu Zhou
6
Mar 10
Transport Questions
Thank you, Peter, for the explanation. On Friday, March 6, 2026 at 10:47:17 AM UTC-7 Wenyu Zhou wrote
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Transport Questions
Thank you, Peter, for the explanation. On Friday, March 6, 2026 at 10:47:17 AM UTC-7 Wenyu Zhou wrote
Mar 10
Bisesh Joshi
,
Hammond, Glenn E
7
Mar 9
O2(g) diffusion inhibiting SOM mineralization in Richards Mode
Hi Glenn, Thank you very much for taking the time to look into this matter and for your helpful
unread,
O2(g) diffusion inhibiting SOM mineralization in Richards Mode
Hi Glenn, Thank you very much for taking the time to look into this matter and for your helpful
Mar 9
Orlando Silva Rojas
,
Hammond, Glenn E
6
Mar 8
Starting a model from separate flow and transport restart files
Hi Glenn Many thanks for your explanation and recommendations. I will look at the links with examples
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Starting a model from separate flow and transport restart files
Hi Glenn Many thanks for your explanation and recommendations. I will look at the links with examples
Mar 8
Hammond, Glenn E
Mar 6
Template Input Files
PFLOTRAN Users, I wanted to let you know that I have created a directory for template input files
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Template Input Files
PFLOTRAN Users, I wanted to let you know that I have created a directory for template input files
Mar 6
Joaquim Tarín Olivares
,
Hammond, Glenn E
2
Mar 5
Question: make Kd value dependent on element concentration
Quim, I've long considered developing a "sorption sandbox" that would allow users to
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Question: make Kd value dependent on element concentration
Quim, I've long considered developing a "sorption sandbox" that would allow users to
Mar 5
Wenyu Zhou
,
Hammond, Glenn E
3
Feb 25
Permeability power and equations mistake in user guide website
Dear Glenn, Thanks for your kind reply! Actually, my major concern is that the porosity-permeability
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Permeability power and equations mistake in user guide website
Dear Glenn, Thanks for your kind reply! Actually, my major concern is that the porosity-permeability
Feb 25
Isaac Prud'homme
,
Peter Lichtner
6
Feb 23
Infinite Concentration Error while making a Pyrite Precipitation Model
Could you explain what originally caused the infinite concentration error? I'm interested in
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Infinite Concentration Error while making a Pyrite Precipitation Model
Could you explain what originally caused the infinite concentration error? I'm interested in
Feb 23
Zhongkang Yan
,
Hammond, Glenn E
2
Feb 10
Inquiry on the status and usability of PFLOTRAN particle transport models (straining/blocking) and availability of a latest PDF user manual
Zhongkang, Although this capability is documented in the report below, it is still under development
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Inquiry on the status and usability of PFLOTRAN particle transport models (straining/blocking) and availability of a latest PDF user manual
Zhongkang, Although this capability is documented in the report below, it is still under development
Feb 10
Bisesh Joshi
,
Hammond, Glenn E
2
Feb 5
ERROR: Error with GENERAL_MODE phase boundary condition: Missing dof.
Bisesh, I suspect it is the “recharge” (I prefer MASS_RATE over VOLUMETRIC_RATE for multiphase) or “
unread,
ERROR: Error with GENERAL_MODE phase boundary condition: Missing dof.
Bisesh, I suspect it is the “recharge” (I prefer MASS_RATE over VOLUMETRIC_RATE for multiphase) or “
Feb 5
Bisesh Joshi
,
Hammond, Glenn E
5
Feb 2
Question about multiple boundary at top surface layers
Thanks for your invaluable suggestion, Glenn. I will use seepage BC. On Mon, Feb 2, 2026 at 4:50 PM
unread,
Question about multiple boundary at top surface layers
Thanks for your invaluable suggestion, Glenn. I will use seepage BC. On Mon, Feb 2, 2026 at 4:50 PM
Feb 2
平田光一
,
Hammond, Glenn E
2
Jan 26
Question about Using “RESTART” in PFLOTRAN for Mineral Dissolution
Koichi, You can overwrite the primary species concentrations in the solution vector in the restart
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Question about Using “RESTART” in PFLOTRAN for Mineral Dissolution
Koichi, You can overwrite the primary species concentrations in the solution vector in the restart
Jan 26
Bisesh Joshi
, …
Sam Shaheen
4
Jan 22
Using temperature time-series data for changing microbial rate constant based on Q10 coefficients in PFLOTRAN
Thanks for the response, Glenn. I was looking for a method to incorporate temperature effects on
unread,
Using temperature time-series data for changing microbial rate constant based on Q10 coefficients in PFLOTRAN
Thanks for the response, Glenn. I was looking for a method to incorporate temperature effects on
Jan 22
chenyao su
, …
Michael Nole
7
Jan 18
what is the difference between the MPHASE and SCO2 modes
Thank you very much for the clarification and for taking the time to answer my questions. This was
unread,
what is the difference between the MPHASE and SCO2 modes
Thank you very much for the clarification and for taking the time to answer my questions. This was
Jan 18
Won Woo Yoon
,
Hammond, Glenn E
2
Jan 6
Effect of grid size on diffusion in heterogeneous media
Won Woo, I apologize or the late response. I left on vacation on Dec 13 and returned yesterday. There
unread,
Effect of grid size on diffusion in heterogeneous media
Won Woo, I apologize or the late response. I left on vacation on Dec 13 and returned yesterday. There
Jan 6