Outputs (181)

Analysing the accuracy of asymptotic approximations in incomplete contact problems (2022)
Journal Article
Moore, M., & Hills, D. (2022). Analysing the accuracy of asymptotic approximations in incomplete contact problems. International Journal of Solids and Structures, 253, Article 111557. https://doi.org/10.1016/j.ijsolstr.2022.111557

The error incurred in the representation of the contact pressure at the edges of incomplete contacts by first order asymptotes is treated, and the maximum value of the relative error found for a range of geometries, both symmetric and non-symmetric.... Read More about Analysing the accuracy of asymptotic approximations in incomplete contact problems.

Tubular-body theory for viscous flows (2022)
Journal Article
Koens, L. (2022). Tubular-body theory for viscous flows. Physical Review Fluids, 7(3), Article 034101. https://doi.org/10.1103/PhysRevFluids.7.034101

Cable-like bodies play a key role in many interdisciplinary systems but are hard to simulate. Asymptotic theories, called slender-body theories, are effective but apply in specific regimes and can be hard to extend beyond leading order. In this lette... Read More about Tubular-body theory for viscous flows.

Jet-driven viscous locomotion of confined thermoresponsive microgels (2022)
Journal Article
Tanasijević, I., Jung, O., Koens, L., Mourran, A., & Lauga, E. (2022). Jet-driven viscous locomotion of confined thermoresponsive microgels. Applied physics letters, 120(10), Article 104101. https://doi.org/10.1063/5.0076244

We consider the dynamics of micro-sized, asymmetrically coated thermoresponsive hydrogel ribbons (microgels) under periodic heating and cooling in the confined space between two planar surfaces. As the result of the temperature changes, the volume an... Read More about Jet-driven viscous locomotion of confined thermoresponsive microgels.

On ribbon graphs and virtual links (2022)
Journal Article
Baldridge, S., H. Kauffman, L., & Rushworth, W. (2022). On ribbon graphs and virtual links. European Journal of Combinatorics, 103, Article 103520. https://doi.org/10.1016/j.ejc.2022.103520

We introduce a new equivalence relation on decorated ribbon graphs, and show that its equivalence classes directly correspond to virtual links. We demonstrate how this correspondence can be used to convert any invariant of virtual links into an invar... Read More about On ribbon graphs and virtual links.

Order and information in the patterns of spinning magnetic micro-disks at the air-water interface (2022)
Journal Article
Wang, W., Gardi, G., Malgaretti, P., Kishore, V., Koens, L., Son, D., …Sitti, M. (2022). Order and information in the patterns of spinning magnetic micro-disks at the air-water interface. Science Advances, 8(2), Article eabk0685. https://doi.org/10.1126/sciadv.abk0685

The application of the Shannon entropy to study the relationship between information and structures has yielded insights into molecular and material systems. However, the difficulty in directly observing and manipulating atoms and molecules hampers t... Read More about Order and information in the patterns of spinning magnetic micro-disks at the air-water interface.

Voting intentions on social media and political opinion polls (2021)
Journal Article
Pekar, V., Najafi, H., Binner, J., Swanson, R., Rickard, C., & Fry, J. (in press). Voting intentions on social media and political opinion polls. Government information quarterly, Article 101658. https://doi.org/10.1016/j.giq.2021.101658

Opinion polls play an important role in modern democratic processes: they are known to not only affect the outcomes of elections, but also have a significant influence on government policy after elections. Recent years have seen large discrepancies b... Read More about Voting intentions on social media and political opinion polls.

Effect of hydrodynamic heterogeneity on particle dispersion in a Taylor-Couette flow reactor with variable configurations of inner cylinder (2021)
Journal Article
Liu, L., Yang, X., Yang, J., Li, G., Guo, Y., Wang, G., & Wang, L. (2022). Effect of hydrodynamic heterogeneity on particle dispersion in a Taylor-Couette flow reactor with variable configurations of inner cylinder. Journal of the Taiwan Institute of Chemical Engineers, 131, Article 104141. https://doi.org/10.1016/j.jtice.2021.11.008

Background Effect of hydrodynamic heterogeneity on particle dispersion in a Taylor-Couette flow (TC) reactor with variable configurations of inner cylinder has been investigated using CFD modelling. Methods Particle dispersion was tracked based... Read More about Effect of hydrodynamic heterogeneity on particle dispersion in a Taylor-Couette flow reactor with variable configurations of inner cylinder.

Ascent concordance (2021)
Journal Article
Rushworth, W. (2021). Ascent concordance. Algebraic and Geometric Topology, 21(6), 3073–3106. https://doi.org/10.2140/agt.2021.21.3073

A cobordism between links in thickened surfaces consists of a surface $ S $ and a $3$-manifold $M $, with $ S $ properly embedded in $ M \times I $. We show that there exist links in thickened surfaces such that if $(S,M) $ is a cobordism between the... Read More about Ascent concordance.

A parity for 2-colourable links (2021)
Journal Article
Rushworth, W. (2021). A parity for 2-colourable links. Osaka Journal of Mathematics, 58(4), 767–801

We introduce the 2-colour parity. It is a theory of parity for a large class of virtual links, defined using the interaction between orientations of the link components and a certain type of colouring. The 2-colour parity is an extension of the Gauss... Read More about A parity for 2-colourable links.

Regularized Stokeslets lines suitable for slender bodies in viscous flow (2021)
Journal Article
Zhao, B., & Koens, L. (2021). Regularized Stokeslets lines suitable for slender bodies in viscous flow. Fluids, 6(9), Article 335. https://doi.org/10.3390/fluids6090335

Slender-body approximations have been successfully used to explain many phenomena in low-Reynolds number fluid mechanics. These approximations typically use a line of singularity solutions to represent flow. These singularities can be difficult to im... Read More about Regularized Stokeslets lines suitable for slender bodies in viscous flow.