Karen Johannesson Posted May 2, 2023 Share Posted May 2, 2023 I am just wondering if there is a way to restrict the location of where I can apply a surface complexation model along a groundwater flow path in X1t. Specifically, if I am trying to model reactive transport along a 100 km flow path, but only want to have the surface database FeOH.sdat apply along the first half of the 100 km flow path. Quote Link to comment Share on other sites More sharing options...
Jia Wang Posted May 3, 2023 Share Posted May 3, 2023 Hello Karen, There's no way to selectively apply datasets to sections of a domain. If you want to set minerals in the system for just surface complexation reactions, you can set the mineral as a kinetic mineral and assign a zero kinetic rate constant. This zero reaction rate effectively sets them as inert minerals to provide a surface for complexation reactions and simple sorption. You can vary quantities of kinetic minerals throughout the domain such that they are absent in the last 50 meters of your domain. For more information on properties to vary within the domain or simulation, please see the Appendix: Heterogeneity chapter in the GWB Transport Modeling User's Guide. Hope this helps, Jia Wang Aqueous Solutions LLC Quote Link to comment Share on other sites More sharing options...
Karen Johannesson Posted May 4, 2023 Author Share Posted May 4, 2023 Hi Jia, Thanks so much. This is very helpful and I think it will solve this question I have been wondering about recently. Best wishes, Karen Quote Link to comment Share on other sites More sharing options...
Jia Wang Posted May 5, 2023 Share Posted May 5, 2023 Hello Karen, Glad to hear that was helpful. Hope the rest of your project goes smoothly. Best regards, Jia Quote Link to comment Share on other sites More sharing options...
Karen Johannesson Posted June 10, 2023 Author Share Posted June 10, 2023 Hi Jia, I think I understood your previous helpful input. I am attaching an example script of what I think you were instructing me to try. This example script calls up goethite as the adsorbing mineral, but only allows for it to be implemented along the initial portion of the flow path. I know that after that radial distance, the aquifer sediments seem to have largely been stripped of their Fe(III) oxide coatings owing to microbial reduction (in part). I am wondering if I set up the kinetic Goethite correctly. I set a rate constant of 0, and then state that the Goethite is available along the initial 26% (or there abouts) length of the flow path. Best wishes, Karen Example script.x1t Quote Link to comment Share on other sites More sharing options...
Jia Wang Posted June 12, 2023 Share Posted June 12, 2023 Hello Karen, The Goethite seems to be set up correctly. You can perform a Go -> Initial run and then verify the percentage of Goethite along the domain quickly by plotting Mineral (Goethite) volume% vs X position. Best regards, Jia Quote Link to comment Share on other sites More sharing options...
Karen Johannesson Posted June 20, 2023 Author Share Posted June 20, 2023 Thanks Jia! Quote Link to comment Share on other sites More sharing options...
Jia Wang Posted June 22, 2023 Share Posted June 22, 2023 You're welcome Karen. I hope the rest of your project goes smoothly. Quote Link to comment Share on other sites More sharing options...
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