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- 01J3Z07A29HSGZJ4SMEBF81GY5 classification A1.
- 01J3Z07A29HSGZJ4SMEBF81GY5 date "2024".
- 01J3Z07A29HSGZJ4SMEBF81GY5 language "eng".
- 01J3Z07A29HSGZJ4SMEBF81GY5 type journalArticle.
- 01J3Z07A29HSGZJ4SMEBF81GY5 hasPart 01J3Z1DBTJM05EJBMGXAT80NW5.pdf.
- 01J3Z07A29HSGZJ4SMEBF81GY5 hasPart 01J6CBNR4AE771M2ZKX2AFAGZE.pdf.
- 01J3Z07A29HSGZJ4SMEBF81GY5 subject "Earth and Environmental Sciences".
- 01J3Z07A29HSGZJ4SMEBF81GY5 subject "Technology and Engineering".
- 01J3Z07A29HSGZJ4SMEBF81GY5 doi "10.1007/s11242-024-02104-w".
- 01J3Z07A29HSGZJ4SMEBF81GY5 issn "0169-3913".
- 01J3Z07A29HSGZJ4SMEBF81GY5 issn "1573-1634".
- 01J3Z07A29HSGZJ4SMEBF81GY5 issue "10-11".
- 01J3Z07A29HSGZJ4SMEBF81GY5 volume "151".
- 01J3Z07A29HSGZJ4SMEBF81GY5 abstract "Solute transport in unsaturated conditions is important in various applications and natural environments, such as groundwater flow in the vadose zone. Studies of unsaturated solute transport show complex characteristics (e.g. non-Fickian transport) due to larger variations in the pore-scale velocities compared to transport in saturated conditions. However, the physical processes at the pore scale are still not completely understood because direct three-dimensional observations at the pore scale are very limited. In this study, single-phase and two-phase solute transport was directly characterized by performing tracer injection experiments in a sintered glass and Bentheimer sandstone sample. These experiments were imaged by continuous scanning with fast laboratory-based micro-computed tomography. The network-scale flow velocities and transport properties were characterized by using the pore-based transient concentration fields to determine the tracer's arrival time and filling duration in every pore. Important measures for dispersion (the scalar dissipation rate and filling duration) were determined and indicated a wide range in pore-scale velocities and the existence of stagnant and flowing pores for the unsaturated experiments. Furthermore, we performed the first quantification of the mass transfer coefficient between stagnant and flowing pores on three-dimensional experimental data. We also calculated the tortuosity directly from the interstitial velocity and the pore-based velocity. This was found to be 13% higher in unsaturated conditions compared to saturated conditions. Our results indicate that pore-scale structural heterogeneity increases the differences between saturated and unsaturated solute transport. This study thus provides further insight into pore-scale spreading and mixing of dissolved substances in unsaturated porous media.".
- 01J3Z07A29HSGZJ4SMEBF81GY5 author 07ECB818-F0EE-11E1-A9DE-61C894A0A6B4.
- 01J3Z07A29HSGZJ4SMEBF81GY5 author 117026B0-D997-11E9-A0C7-63B45607D3EF.
- 01J3Z07A29HSGZJ4SMEBF81GY5 author 69B3FC18-5B00-11E4-AB4A-F60EB5D1D7B1.
- 01J3Z07A29HSGZJ4SMEBF81GY5 author F64E9522-F0ED-11E1-A9DE-61C894A0A6B4.
- 01J3Z07A29HSGZJ4SMEBF81GY5 dateCreated "2024-07-29T10:22:50Z".
- 01J3Z07A29HSGZJ4SMEBF81GY5 dateModified "2025-02-11T15:13:56Z".
- 01J3Z07A29HSGZJ4SMEBF81GY5 name "Direct pore-scale comparison of solute transport in saturated and unsaturated porous media using fast micro-computed tomography".
- 01J3Z07A29HSGZJ4SMEBF81GY5 pagination urn:uuid:b08be9f6-8657-4868-9b16-40c593450678.
- 01J3Z07A29HSGZJ4SMEBF81GY5 sameAs LU-01J3Z07A29HSGZJ4SMEBF81GY5.
- 01J3Z07A29HSGZJ4SMEBF81GY5 sourceOrganization urn:uuid:68f95c71-6d77-41e1-8b04-b665d9194c05.
- 01J3Z07A29HSGZJ4SMEBF81GY5 type A1.