Focusing only on few solutes from primary species in source_sink approach

[Bisesh Joshi]

Hi all,

I'm trying  to use source sink for plant uptake of nutrients like NH4+ , however, I don't want to control other solutes (e.g. N2)  in those grid cells via source_sink, which would be dictated by other boundary conditions and reactive transport. 

I'm using equilibrium transport conditions for it. However, I have to include all primary species in the constraint for transport conditions.

Please let me know if  it is possible to do or if anybody has any suggestions regarding this. 

Thank you so much in advance.

Best regards,

Bisesh

--

Bisesh Joshi

PhD student

Water Science and Policy

Graduate College

University of Delaware

901-297-6761

[Hammond, Glenn E]

Bisesh,

The Reaction Sandbox offers an excellent solution for your needs. You can implement a sink term for an individual species; just be sure to maintain charge balance throughout the process.

Glenn

From: pflotra...@googlegroups.com <pflotra...@googlegroups.com> on behalf of Bisesh Joshi <bjo...@udel.edu>
Date: Saturday, March 21, 2026 at 5:39 PM
To: pflotra...@googlegroups.com <pflotra...@googlegroups.com>
Subject: [pflotran-users: 8723] Focusing only on few solutes from primary species in source_sink approach

Check twice before you click! This email originated from outside PNNL.

--
You received this message because you are subscribed to the Google Groups "pflotran-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to pflotran-user...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/pflotran-users/CAEvi1yS8_8eZZ-2MqAbg95yEHAWAgYjXaiR%3Da_%2B6fxhjQekTWw%40mail.gmail.com.

[Bisesh Joshi]

Thank you so much for taking the time to respond to my query, Glenn.

 Do you have any suggestions on how to allocate this particular sink to a specific region via the Reaction sandbox?

Best regards,

Bisesh

To view this discussion visit https://groups.google.com/d/msgid/pflotran-users/BY3PR09MB755562DD61446513C74D97179A4BA%40BY3PR09MB7555.namprd09.prod.outlook.com.