Frictional fluid instabilities shaped by viscous forces
Multiphase flows involving granular materials are complex and prone to pattern formation caused by competing mechanical and hydrodynamic interactions. Here we study the interplay between granular bulldozing and the stabilising effect of viscous pressure gradients in the invading fluid. Injection of...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Springer Nature
2023
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| _version_ | 1826310573855342592 |
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| author | Zhang, D Campbell, JM Eriksen, JA Flekkøy, EG Måløy, KJ Macminn, C Sandnes, B |
| author_facet | Zhang, D Campbell, JM Eriksen, JA Flekkøy, EG Måløy, KJ Macminn, C Sandnes, B |
| author_sort | Zhang, D |
| collection | OXFORD |
| description | Multiphase flows involving granular materials are complex and prone to pattern formation caused by competing mechanical and hydrodynamic interactions. Here we study the interplay between granular bulldozing and the stabilising effect of viscous pressure gradients in the invading fluid. Injection of aqueous solutions into layers of dry, hydrophobic grains represent a viscously stable scenario where we observe a transition from growth of a single frictional finger to simultaneous growth of multiple fingers as viscous forces are increased. The pattern is made more compact by the internal viscous pressure gradient, ultimately resulting in a fully stabilised front of frictional fingers advancing as a radial spoke pattern. |
| first_indexed | 2024-03-07T07:53:57Z |
| format | Journal article |
| id | oxford-uuid:0f01a742-7449-4d56-834b-c54db8ccdd76 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:53:57Z |
| publishDate | 2023 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:0f01a742-7449-4d56-834b-c54db8ccdd762023-08-10T12:44:33ZFrictional fluid instabilities shaped by viscous forcesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0f01a742-7449-4d56-834b-c54db8ccdd76EnglishSymplectic ElementsSpringer Nature2023Zhang, DCampbell, JMEriksen, JAFlekkøy, EGMåløy, KJMacminn, CSandnes, BMultiphase flows involving granular materials are complex and prone to pattern formation caused by competing mechanical and hydrodynamic interactions. Here we study the interplay between granular bulldozing and the stabilising effect of viscous pressure gradients in the invading fluid. Injection of aqueous solutions into layers of dry, hydrophobic grains represent a viscously stable scenario where we observe a transition from growth of a single frictional finger to simultaneous growth of multiple fingers as viscous forces are increased. The pattern is made more compact by the internal viscous pressure gradient, ultimately resulting in a fully stabilised front of frictional fingers advancing as a radial spoke pattern. |
| spellingShingle | Zhang, D Campbell, JM Eriksen, JA Flekkøy, EG Måløy, KJ Macminn, C Sandnes, B Frictional fluid instabilities shaped by viscous forces |
| title | Frictional fluid instabilities shaped by viscous forces |
| title_full | Frictional fluid instabilities shaped by viscous forces |
| title_fullStr | Frictional fluid instabilities shaped by viscous forces |
| title_full_unstemmed | Frictional fluid instabilities shaped by viscous forces |
| title_short | Frictional fluid instabilities shaped by viscous forces |
| title_sort | frictional fluid instabilities shaped by viscous forces |
| work_keys_str_mv | AT zhangd frictionalfluidinstabilitiesshapedbyviscousforces AT campbelljm frictionalfluidinstabilitiesshapedbyviscousforces AT eriksenja frictionalfluidinstabilitiesshapedbyviscousforces AT flekkøyeg frictionalfluidinstabilitiesshapedbyviscousforces AT maløykj frictionalfluidinstabilitiesshapedbyviscousforces AT macminnc frictionalfluidinstabilitiesshapedbyviscousforces AT sandnesb frictionalfluidinstabilitiesshapedbyviscousforces |