Equilibrium-approximated solutions to the reactive Lauwerier problem: thermal fronts as controls on reactive fronts in Earth systems.
Saved in:
| Title: | Equilibrium-approximated solutions to the reactive Lauwerier problem: thermal fronts as controls on reactive fronts in Earth systems. |
|---|---|
| Authors: | Roded, Roi1 (AUTHOR) roi.roded@mail.huji.ac.il |
| Source: | Hydrology & Earth System Sciences. 2025, Vol. 29 Issue 21, p6137-6156. 20p. |
| Subject Terms: | *Reactive flow, *Water-rock interaction, *Chemical transportation, *Thermal instability, *Thermal gradient measurment, *Analytical geochemistry |
| Abstract: | Rates of subsurface rock alteration by reactive flows are often independent of kinetic rates and governed solely by solute transport. This enables a major simplification that makes models tractable even for complex kinetic systems through the widely applied local equilibrium assumption. Here, this assumption is applied to the reactive Lauwerier problem (RLP), which describes non-isothermal fluid injection into a confined aquifer, leading to chemical disequilibrium. Specifically, the thermal changes drive temperature-dependent solubility variations, leading to undersaturation and dissolution or supersaturation precipitation reactions. Using this framework, solutions for reaction rate and porosity evolution are developed and analyzed, yielding a time-dependent criterion for their validity that incorporates time and thermal parameters. A key feature – the coalescence of thermal and reactive fronts – is used to explore their evolution over time in different settings. The applicability of the equilibrium model for important fluid–rock interaction processes is then examined and discussed, including sedimentary reservoir evolution and mineral carbonation in ultramafic rocks. Notably, the approach used here to extend thermal solutions for reactive processes suggests broader applicability. The findings also highlight that thermally driven reactive fronts, particularly near equilibrium, often become stationary after a relatively short period. As a result, their spatial evolution is governed by geological processes operating over much longer timescales. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: enr DbLabel: Energy & Power Source An: 189362309 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Equilibrium-approximated solutions to the reactive Lauwerier problem: thermal fronts as controls on reactive fronts in Earth systems. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Roded%2C+Roi%22">Roded, Roi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> roi.roded@mail.huji.ac.il</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Hydrology+%26+Earth+System+Sciences%22">Hydrology & Earth System Sciences</searchLink>. 2025, Vol. 29 Issue 21, p6137-6156. 20p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Reactive+flow%22">Reactive flow</searchLink><br />*<searchLink fieldCode="DE" term="%22Water-rock+interaction%22">Water-rock interaction</searchLink><br />*<searchLink fieldCode="DE" term="%22Chemical+transportation%22">Chemical transportation</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+instability%22">Thermal instability</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+gradient+measurment%22">Thermal gradient measurment</searchLink><br />*<searchLink fieldCode="DE" term="%22Analytical+geochemistry%22">Analytical geochemistry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Rates of subsurface rock alteration by reactive flows are often independent of kinetic rates and governed solely by solute transport. This enables a major simplification that makes models tractable even for complex kinetic systems through the widely applied local equilibrium assumption. Here, this assumption is applied to the reactive Lauwerier problem (RLP), which describes non-isothermal fluid injection into a confined aquifer, leading to chemical disequilibrium. Specifically, the thermal changes drive temperature-dependent solubility variations, leading to undersaturation and dissolution or supersaturation precipitation reactions. Using this framework, solutions for reaction rate and porosity evolution are developed and analyzed, yielding a time-dependent criterion for their validity that incorporates time and thermal parameters. A key feature – the coalescence of thermal and reactive fronts – is used to explore their evolution over time in different settings. The applicability of the equilibrium model for important fluid–rock interaction processes is then examined and discussed, including sedimentary reservoir evolution and mineral carbonation in ultramafic rocks. Notably, the approach used here to extend thermal solutions for reactive processes suggests broader applicability. The findings also highlight that thermally driven reactive fronts, particularly near equilibrium, often become stationary after a relatively short period. As a result, their spatial evolution is governed by geological processes operating over much longer timescales. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=189362309 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.5194/hess-29-6137-2025 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 20 StartPage: 6137 Subjects: – SubjectFull: Reactive flow Type: general – SubjectFull: Water-rock interaction Type: general – SubjectFull: Chemical transportation Type: general – SubjectFull: Thermal instability Type: general – SubjectFull: Thermal gradient measurment Type: general – SubjectFull: Analytical geochemistry Type: general Titles: – TitleFull: Equilibrium-approximated solutions to the reactive Lauwerier problem: thermal fronts as controls on reactive fronts in Earth systems. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Roded, Roi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 10275606 Numbering: – Type: volume Value: 29 – Type: issue Value: 21 Titles: – TitleFull: Hydrology & Earth System Sciences Type: main |
| ResultId | 1 |
