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Persistent Identifier
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doi:10.18419/darus-4153 |
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Publication Date
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2024-05-15 |
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Title
| Image processing code for characterization of multiphase flow in porous media |
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Author
| Vahid Dastjerdi, Samaneh (Institute of Applied Mechanics (CE) & SC SimTech, University of Stuttgart) - ORCID: 0000-0003-0315-4067
Steeb, Holger (Institute of Applied Mechanics (CE) & SC SimTech, University of Stuttgart) - ORCID: 0000-0001-7602-4920 |
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Point of Contact
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Use email button above to contact.
Vahid Dastjerdi, Samaneh (Institute of Applied Mechanics (CE) & SC SimTech, University of Stuttgart)
Steeb, Holger (Institute of Applied Mechanics (CE) & SC SimTech, University of Stuttgart) |
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Description
| This work utilizes microfluidic experiments to gather data captured as snapshots during the experiments. These snapshots provide real-time information and undergo image processing to derive the required data. Image processing involves several steps tailored to the investigations:
- Making a reference image (mask): This process involves creating a reference image, or mask, to document the initial conditions. For instance, the porous domain is imaged when saturated with one phase to differentiate various areas containing different phases.
- Reading and cutting images: Images showing changes in fluid volume fraction are selectively chosen and processed. Each image is read into MATLAB, and the area of interest is extracted.
- Image segmentation: Labeling each pixel of the images is done via thresholding and edge detection.
- Measuring parameters: Parameters like saturation, interfacial length, area, contact angle, and curvature are measured. These parameters play a crucial role in analyzing the experiments. The interfacial area is calculated through various formulations.
- Calculating capillary pressure: Several forms of capillary pressure are calculated using information derived from the experiments.
- REV-Scale Quantities: Parameters are upscaled to represent Representative Elementary Volume (REV)-scale values essential for continuum theories. REV-scale capillary pressure is derived from pore-scale values using appropriate averaging techniques.
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Subject
| Computer and Information Science; Earth and Environmental Sciences; Engineering; Mathematical Sciences; Other |
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Keyword
| Image Processing https://www.wikidata.org/wiki/Q327008 (Wikidata)
Porous Medium https://www.wikidata.org/wiki/Q3271208 (Wikidata)
Two-Phase Flow https://www.wikidata.org/wiki/Q232997 (Wikidata) |
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Topic Classification
| Fluid Mechanics (DFGFO) https://github.com/tibonto/dfgfo/404-03 |
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Related Publication
| Vahid Dastjerdi, S.; Karadimitriou, N.; Hassanizadeh, S. M. & Steeb, H.: Experimental evaluation of fluid connectivity in two-phase flow in porous media during drainage. Water Resources Research 58 (2022), e2022WR033451. doi: 10.1029/2022WR033451 https://doi.org/10.1029/2022WR033451
Vahid Dastjerdi, S.; Karadimitriou, N.; Hassanizadeh, S. M. & Steeb, H.: Experimental evaluation of fluid connectivity in two-phase flow in porous media. Advances in Water Resources 172 (2023), 104378. doi: 10.1016/j.advwatres.2023.104378 https://doi.org/10.1016/j.advwatres.2023.104378
Vahid Dastjerdi, S.; Karadimitriou, N.; Hassanizadeh, S. M. & Steeb, H.: Formation of common preferential two-phase displacement pathways in porous media. Water Resources Research (Submitted Jan. 2024). |
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Language
| English |
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Producer
| Vahid Dastjerdi, Samaneh (University of Stuttgart) |
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Funding Information
| DFG: EXC 2075 - 390740016 |
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Depositor
| Vahid Dastjerdi, Samaneh |
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Deposit Date
| 2024-04-12 |
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Software
| MATLAB, Version: 2019a (9.6.0.1214997) |
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Related Dataset
| Vahid Dastjerdi, S.; Karadimitriou, N. & Steeb, H.: Data for: Experimental Evalu- ation of Connectivity in Two-phase Flow in Porous Media during Drainage (2022), URL https://doi.org/10.18419/darus-2250;
Vahid Dastjerdi, S.; Karadimitriou, N. & Steeb, H.: Data for: Experimental Evaluation of Connectivity in Two-phase Flow in Porous Media (2022), URL https://doi.org/10.18419/darus-2841;
Vahid Dastjerdi, S.; Karadimitriou, N. & Steeb, H.: Data for: Formation of common preferential two-phase displacement pathways in porous media (2024). URL https://doi.org/10.18419/darus-3358 |
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Other Reference
| Pratt, V.: Direct least-squares fitting of algebraic surfaces. Computer Graphics 21 (1987), 145-152.; Chernov, N.: Circle fit (pratt method). MATLAB Central File Exchange (2021). |
