2026-09-25T10:37:43Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/129982 2025-10-25 col_2142_5131 col_2142_14800 com_2142_5130 com_2142_14799 com_2142_234

application/pdf en text Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms The student, Aryaman Srivastav, accepted the attached license on 2025-07-23 at 11:12. The student, Aryaman Srivastav, submitted this Thesis for approval on 2025-07-23 at 11:39. This Thesis was approved for publication on 2025-07-23 at 14:15. DSpace SAF Submission Ingestion Package generated from Vireo submission #22706 on 2025-10-20 at 20:15:42 ecFOAM: A finite volume electrochemistry solver, with applications for molten salt systems Srivastav, Aryaman 2025-07-23 Vergari, Lorenzo Panerai, Francesco Electrohydrodynamics Multicomponent Electrochemistry Molten Salt Finite Volume Fvm Openfoam Butler-volmer Numerical eng Transport in molten-salt reactors and other high-temperature liquids is governed by tightly coupled multicomponent diffusion, charge migration, and fluid flow. This thesis presents ecFOAM, an open-source finite-volume library built on OpenFOAM-12 to solve fully coupled electrohydrodynamic transport with electrochemical effects. The governing equations are derived in a thermodynamically consistent form, and electrode kinetics are implemented with a segregated PIMPLE algorithm. The model avoids resolving multiple length scales by adopting the thin double-layer approximation on electrochemical interfaces and enforcing local electroneutrality through an elliptic constraint on the electric potential. A series of test cases were run that function as verification exercises, exploratory studies, and regression tests. A microbenchmark from the exaFOAM supercomputing project was ported to test the non-electrochemical components of the solver. Quantitative agreement with reference data was obtained. Two planar-electrode problems were examined: a one-dimensional half-cell with ion depletion, and a two-electrode metal deposition case with Butler–Volmer kinetics. Although depletion and deposition behavior was observed in each case respectively, quantitative agreement was not obtained for both cases. Finally, a molten-salt natural-convection loop was generated as a demonstration model doubling as a scaling test, but execution of the model is on hold, pending verification of the previous electrochemical cases. 2025-08 Text https://hdl.handle.net/2142/129982 Copyright 2025 Aryaman Srivastav Aerospace Engineering Aerospace Engineering University of Illinois Urbana-Champaign M.S. Thesis