Capillary disconnect during drying in model porous media at different wettability
[EN] We carried out drying studies on a 2.5D micromodel based on a thin section of a carbonate rock to investigate the impact of wettability on the capillary disconnect, the moment when liquid films de-pin from the external evaporating surface. While this is coincident with the transition to low eva...
| Autores: | , |
|---|---|
| Formato: | capítulo de livro |
| Fecha de publicación: | 2018 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/116738 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/116738 |
| Access Level: | acceso abierto |
| Palavra-chave: | Drying Dehydration Dewatering Emerging technologies Products quality Process control Environmental Evaporation Sublimation Diffusion Energy Intensification Capillary Liquid films Micromodel Wettability Crystalization |
| Resumo: | [EN] We carried out drying studies on a 2.5D micromodel based on a thin section of a carbonate rock to investigate the impact of wettability on the capillary disconnect, the moment when liquid films de-pin from the external evaporating surface. While this is coincident with the transition to low evaporation rate (diffusion limited) for deionized-water, our experiments show, the corner wetting films persisted after the transition to low evaporation rate for both water-wet and mixed-wet micromodels for brine, as solid salt continued to build up at the external evaporating surface. Fully oil wet micromodels showed a drying rate transition coincident with de-pinning. |
|---|