Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Koens, Lyndon"'
We present an asymptotic theory for solving the dynamics of slender autophoretic loops and knots. Our formulation is valid for non-intersecting 3D centrelines, with arbitrary chemical patterning and varying (circular) cross-sectional radius, allowing
Externí odkaz:
http://arxiv.org/abs/2310.10217
Autor:
Koens, Lyndon, Walker, Benjamin J.
Filaments are ubiquitous within the microscopic world. They occur frequently in both biological and industrial environments and display varied and rich dynamics. Their wide range of applications has spurred the development of a special branch of asym
Externí odkaz:
http://arxiv.org/abs/2303.17275
The slow viscous flow through a doubly-periodic array of cylinders does not have an analytical solution. However, as a reduced model for the flow within fibrous porous media, this solution is important for many real-world systems. We asymptotically d
Externí odkaz:
http://arxiv.org/abs/2301.12774
Autor:
Koens, Lyndon
Publikováno v:
Phys. Rev. Fluids, vol. 7, no. 3, p. 034101, Mar. 2022
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
Externí odkaz:
http://arxiv.org/abs/2203.07187
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
Externí odkaz:
http://arxiv.org/abs/2202.05157
Autor:
Zhao, Boan, Koens, Lyndon
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 the flow. These singularities can be difficult t
Externí odkaz:
http://arxiv.org/abs/2109.07621
Publikováno v:
Phys. Rev. Fluids, vol. 6, no. 6, p. 064101, Jun. 2021
The viscous drag on a slender rod by a wall is important to many biological and industrial systems. This drag critically depends on the separation between the rod and the wall and can be approximated asymptotically in specific regimes, namely far fro
Externí odkaz:
http://arxiv.org/abs/2106.13352
Autor:
Koens, Lyndon, Lauga, Eric
Publikováno v:
J. Fluid Mech. 916 (2021) A17
The geometric phase techniques for swimming in viscous flows express the net displacement of a swimmer as a path integral of a field in configuration space. This representation can be transformed into an area integral for simple swimmers using Stokes
Externí odkaz:
http://arxiv.org/abs/2104.05144
Autor:
Wang, Wendong, Gardi, Gaurav, Malgaretti, Paolo, Kishore, Vimal, Koens, Lyndon, Son, Donghoon, Gilbert, Hunter, Wu, Zongyuan, Harwani, Palak, Lauga, Eric, Holm, Christian, Sitti, Metin
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
Externí odkaz:
http://arxiv.org/abs/1910.11226
Since their development in 2001, regularised stokeslets have become a popular numerical tool for low-Reynolds number flows since the replacement of a point force by a smoothed blob overcomes many computational difficulties associated with flow singul
Externí odkaz:
http://arxiv.org/abs/1908.08153