SFB 1313 is an interdisciplinary Collaborative Research Centre of the University of Stuttgart, consisting of four major project areas (A-D), divided in 17 individual research projects. It is funded by the German Research Foundation (DFG) and affiliated to the Cluster of Excellence "Data-integrated Simulation Science (SimTech)".

Interfaces have a great impact on multi-field processes (flow, transport and deformation) in porous-media systems. SFB 1313 aims to research these interfaces and to gain a fundamental understanding how they affect multi-field processes. An important step is therefore to quantify how the dynamics of fluid-fluid and fluid-solid interfaces in porous-media systems are affected by pore geometry, heterogeneity and fractures. Furthermore, developing experimental knowledge as well as mathematical and computational models will support SFB 1313‘s research.

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FTBExperimental--dw__a6mm_t60min_pC0.5_T21__experiment.csv
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Tabular Data - 326 B - 3 Variables, 19 Observations - UNF:6:d/VgHv6wl8cDNFlFOr0dLA==
DataTime Series
Experimental time-series data for the a6mm aperture case with 60 min mean residence time, 0.5 bar CO₂ partial pressure, and 21 °C temperature. Contains measurements of elapsed time, calcium concentration (cCa, mg/L), and pH, processed from NERO_ExperimentalData.ods for postprocessing and simulation validation.
FTBExperimental--dw__a6mm_t60min_pC1.0_T21__experiment.csv
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Tabular Data - 342 B - 3 Variables, 20 Observations - UNF:6:U2cN0kAuJw6vOSlDhYPksQ==
DataTime Series
Experimental time-series data for the a6mm aperture case with 60 min mean residence time, 1.0 bar CO₂ partial pressure, and 21 °C temperature. Contains measurements of elapsed time, calcium concentration (cCa, mg/L), and pH, processed from NERO_ExperimentalData.ods for postprocessing and simulation validation.
ftb_raw.tar.gz
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Gzip Archive - 16.4 GB - MD5: d30c0d678eeaa562acfbcdbe641450a4
Optional Data
Contains the simulation output raw data which can be used to reproduce vtk output. See section "Reproducing the VTK Files" in repositories readme.
ftb.tar.gz
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Gzip Archive - 377.8 MB - MD5: 168232b6c35383ddaf551ba97d661e28
Data
Contains the main data set used for reproduction of the plots in the paper
get_preexperimental_inlet_fluid_pH.py
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Python Source Code - 2.8 KB - MD5: aea9a8dbe24875e5443063a8baa02acd
Code
Python script that calculates the theoretical pre-experimental inlet fluid pH and prints it to the CLI. Corresponds to pH_in values Table 1 in the associated publication.
get_surface_retreat.py
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Python Source Code - 15.6 KB - MD5: 734907a8753423b28543c1dacd9d1fc6
Code
Python script that estimates the surface retreat expected in the experiments using the NERO_ExperimentalData.ods file; prints results to the console.
Grid_Convergent_Simulation_Values.pdf
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Adobe PDF - 29.1 KB - MD5: 6c47351c2d4b5c48852df5d2b76cd95a
PDF figure generated by `plot.py time` showing the time-series evolution of calcium concentration and pH for all 12 simulation cases using the grid-convergent resolution. Shown in figure 4 (b) in associated publication.
H2OCO2CaReactionModel.py
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Python Source Code - 5.9 KB - MD5: 216be2d15d451df81f6eeb895da0087c
Code
Core Python module implementing the chemistry of the H₂O–CO₂–CaCO₃ system. It defines temperature-dependent equilibrium constants, carbonate speciation, and solvers for open and closed CO₂ equilibria, providing the thermodynamic basis for all pH and dissolution calculations in the associated publication.
Initial_Grid_Simulation_Values.pdf
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Adobe PDF - 29.3 KB - MD5: de7a6a42eca2838ba279228436d09393
PDF figure generated by `plot.py time` showing the time-series evolution of calcium concentration and pH for all 12 simulation cases using the initial grid resolution. Not shown in associated publication.
interpolate_co2_diffusion_coefficients.py
May 27, 2026 - Data for: Validating a Numerical Model for Calco-Carbonic Reactive Flow in a Laboratory Scale Fracture Analog
Python Source Code - 5.5 KB - MD5: 3b5d58372c89c8ee668f6942944bbbd3
Code
Python script that performs linear interpolation and regression analysis for the temperature-dependent diffusion coefficient of CO₂ in water, using experimental data from the CRC Handbook of Chemistry and Physics. It fits a linear model to predict diffusion coefficients at arbitrary temperatures and calculates correlation statistics. The script acc...
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