Smoothed particle hydrodynamics simulations of microstructure induced stress overshoot in structured fluids
Article
Article Title | Smoothed particle hydrodynamics simulations of microstructure induced stress overshoot in structured fluids |
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ERA Journal ID | 1298 |
Article Category | Article |
Authors | Le-Cao, K., Tran-Duc, T., Mai-Duy, N., Quoc Nguyen, Y., Khoo, B. C. and Phan-Thien, N. |
Journal Title | Physics of Fluids |
Journal Citation | 35 (12) |
Article Number | 123111 |
Number of Pages | 12 |
Year | 2023 |
Publisher | AIP Publishing |
Place of Publication | United States |
ISSN | 1070-6631 |
1089-7666 | |
Digital Object Identifier (DOI) | https://doi.org/10.1063/5.0179269 |
Web Address (URL) | https://pubs.aip.org/aip/pof/article/35/12/123111/2929414/Smoothed-particle-hydrodynamics-simulations-of |
Abstract | Stress overshoot/undershoot is an important phenomenon in structured fluids undergoing dynamic and transient flow. To accurately capture the flow process, it is important to have a better understanding of and include in the numerical modeling the microstructure evolution that leads to the stress overshoot/undershoot phenomenon. We present a procedure for incorporating a microstructure model into a Lagrangian framework based on the smoothed particle hydrodynamics fluid solver. The numerical simulation is performed for a typical structured fluid under an applied strain rate history flow. Good agreement between the numerical results and the experimental data lends credence to and validates the proposed procedure for simulations of complex mixture flows. Additionally, the interaction between a flow of structured fluid and a circular cylinder placed in a channel is investigated. The viscous force is found to overshoot together with the applied gradient pressure and decrease over time as the fluid approaches the equilibrium state. |
Keywords | Computational fluid dynamics, Rheology and fluid dynamics, Shear thinning, Viscosity |
ANZSRC Field of Research 2020 | 401706. Numerical modelling and mechanical characterisation |
490303. Numerical solution of differential and integral equations | |
Public Notes | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Phys. Fluids 35, 123111 (2023) and may be found at https://doi.org/10.1063/5.0179269 |
Byline Affiliations | National University of Singapore |
University of Adelaide | |
University of Southern Queensland | |
Van Lang University, Viet Nam | |
Binh Duong Economics and Technology University, Vietnam |
https://research.usq.edu.au/item/z383q/smoothed-particle-hydrodynamics-simulations-of-microstructure-induced-stress-overshoot-in-structured-fluids
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