Viscosity Function for Yield-Stress Liquids
A viscosity function for highly-shear-thinning or yield-stress liquids such as pastes and slurries is proposed. This function is continuous and presents a low shear-rate viscosity plateau, followed by a sharp viscosity drop at a threshold shear stress value (yield stress), and a subsequent power-law...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2004-12-01
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| Series: | Applied Rheology |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/arh-2004-0016 |
| _version_ | 1819290860245745664 |
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| author | Souza Mendes Paulo R. Dutra Eduardo S. S. |
| author_facet | Souza Mendes Paulo R. Dutra Eduardo S. S. |
| author_sort | Souza Mendes Paulo R. |
| collection | DOAJ |
| description | A viscosity function for highly-shear-thinning or yield-stress liquids such as pastes and slurries is proposed. This function is continuous and presents a low shear-rate viscosity plateau, followed by a sharp viscosity drop at a threshold shear stress value (yield stress), and a subsequent power-law region. The equation was fitted to data for Carbopol aqueous solutions at two different concentrations, a drilling fluid, an water/oil emulsion, a commercial mayonnaise, and a paper coating formulation. The quality of the fittings was generally good. |
| first_indexed | 2024-12-24T03:29:27Z |
| format | Article |
| id | doaj.art-867c1ed67d8f420383158ac0dec597be |
| institution | Directory Open Access Journal |
| issn | 1617-8106 |
| language | English |
| last_indexed | 2024-12-24T03:29:27Z |
| publishDate | 2004-12-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Applied Rheology |
| spelling | doaj.art-867c1ed67d8f420383158ac0dec597be2022-12-21T17:17:14ZengDe GruyterApplied Rheology1617-81062004-12-0114629630210.1515/arh-2004-0016Viscosity Function for Yield-Stress LiquidsSouza Mendes Paulo R.0Dutra Eduardo S. S.1Department of Mechanical Engineering, Pontifícia Universidade Católica - RJ Rua Marquês de São Vicente 225, Rio de Janeiro, RJ 22453-900, BrazilDepartment of Mechanical Engineering, Pontifícia Universidade Católica - RJ Rua Marquês de São Vicente 225, Rio de Janeiro, RJ 22453-900, BrazilA viscosity function for highly-shear-thinning or yield-stress liquids such as pastes and slurries is proposed. This function is continuous and presents a low shear-rate viscosity plateau, followed by a sharp viscosity drop at a threshold shear stress value (yield stress), and a subsequent power-law region. The equation was fitted to data for Carbopol aqueous solutions at two different concentrations, a drilling fluid, an water/oil emulsion, a commercial mayonnaise, and a paper coating formulation. The quality of the fittings was generally good.https://doi.org/10.1515/arh-2004-0016viscosity functionviscoplastic liquidyield stress measurement |
| spellingShingle | Souza Mendes Paulo R. Dutra Eduardo S. S. Viscosity Function for Yield-Stress Liquids Applied Rheology viscosity function viscoplastic liquid yield stress measurement |
| title | Viscosity Function for Yield-Stress Liquids |
| title_full | Viscosity Function for Yield-Stress Liquids |
| title_fullStr | Viscosity Function for Yield-Stress Liquids |
| title_full_unstemmed | Viscosity Function for Yield-Stress Liquids |
| title_short | Viscosity Function for Yield-Stress Liquids |
| title_sort | viscosity function for yield stress liquids |
| topic | viscosity function viscoplastic liquid yield stress measurement |
| url | https://doi.org/10.1515/arh-2004-0016 |
| work_keys_str_mv | AT souzamendespaulor viscosityfunctionforyieldstressliquids AT dutraeduardoss viscosityfunctionforyieldstressliquids |