Flows of viscoplastic fluids
Lead Research Organisation:
University of Bristol
Department Name: Mathematics
Abstract
Large -scale, particle-laden flows pose significant hazards to lives and livelihoods and shape our environment. However there is no consensus on how to model their dynamics, with particular challenges in representing both the stresses that they generate and their ability to entrain deposited material into the flow. At a fundamental level these challenges concern the ability of granular materials to exhibit both fluid-like and solid-like features, an important problem that this research project will undertake through mathematical modelling, analysis and computation.
Organisations
People |
ORCID iD |
| Jesse Taylor-West (Student) |
Publications
Taylor-West J
(2024)
Lava Delta Formation: Mathematical Modeling and Laboratory Experiments
in Journal of Geophysical Research: Earth Surface
Taylor-West J
(2023)
Viscoplastic flow between hinged plates
in Journal of Fluid Mechanics
Taylor-West J
(2024)
Scraping of a thin layer of viscoplastic fluid
in Physical Review Fluids
Taylor-West J
(2021)
The converging flow of viscoplastic fluid in a wedge or cone
in Journal of Fluid Mechanics
Taylor-West J
(2022)
Viscoplastic corner eddies
in Journal of Fluid Mechanics
Studentship Projects
| Project Reference | Relationship | Related To | Start | End | Student Name |
|---|---|---|---|---|---|
| EP/R513179/1 | 30/09/2018 | 29/09/2023 | |||
| 2271366 | Studentship | EP/R513179/1 | 30/09/2019 | 30/03/2023 | Jesse Taylor-West |
| Description | A number of solutions have been calculated for the flow of a viscoplastic fluid in wedge/corner geometries, . Viscoplastic fluids are a class of fluid which acts like a solid at low stresses but flow like a liquid at higher stresses, and encompass such real-world fluids as mud, cement, toothpaste and peanut-butter. One solution provides a description of the velocities and stresses when such a fluid is pushed through a converging geometry such as a hopper or conical funnel. Another solution determines the extent of stagnant material in a corner when a it is disturbed by forcing far from the corner (with application to fouling and cleaning in food processing geometries). A third solution determines the stresses and velocities when the fluid is squeezed between hinged plates, as for extrusion flows. |
| Exploitation Route | The work is of a fundamental fluid-dynamics nature, and so the most immediate use is likely to be in an academic setting where the asymptotic boundary-layer techniques may be used for other viscoplastic problems. Outside of academia the work could be used to model the forces required to extrude a viscoplastic fluid (such as cement or food pastes) during a manufacturing process or to determine the extent of stagnant regions in transport of food pastes. |
| Sectors | Agriculture Food and Drink Construction Manufacturing including Industrial Biotechology |