Marangoni-like tissue flows enhance symmetry breaking of embryonic organoids

S Gsell, S Tlili, M Merkel, PF Lenne - bioRxiv, 2023 - biorxiv.org
During early development of multi-cellular animals, cells self-organize to set up the body
axes, such as the primary head-to-tail axis, based on which the later body plan is defined …

Enhanced single-node lattice Boltzmann boundary condition for fluid flows

F Marson, Y Thorimbert, B Chopard, I Ginzburg, J Latt - Physical Review E, 2021 - APS
We propose a procedure to implement Dirichlet velocity boundary conditions for complex
shapes that use data from a single node only, in the context of the lattice Boltzmann method …

Pulsated Herschel-Bulkley flows in two-dimensional channels: A model for mucus clearance devices

A Galko, S Gsell, U d'Ortona, L Morin, J Favier - Physical Review Fluids, 2022 - APS
Pressure oscillations applied to human airways can help patients to evacuate bronchial
mucus, a highly non-Newtonian gel. To explore the fluid mechanics aspects of these …

Flow simulations of rectal evacuation: towards a quantitative evaluation from video defaecography

F Ahmad, S Tanguy, A Dubreuil, A Magnin… - Interface …, 2022 - royalsocietypublishing.org
Mechanistic understanding of anorectal (patho) physiology is missing to improve the
medical care of patients suffering from defaecation disorders. Our objective is to show that …

Unified directional parabolic-accurate lattice Boltzmann boundary schemes for grid-rotated narrow gaps and curved walls in creeping and inertial fluid flows

I Ginzburg, G Silva, F Marson, B Chopard, J Latt - Physical Review E, 2023 - APS
The goal of this work is to advance the characteristics of existing lattice Boltzmann Dirichlet
velocity boundary schemes in terms of the accuracy, locality, stability, and mass …

Phase separation dynamics in deformable droplets

S Gsell, M Merkel - Soft Matter, 2022 - pubs.rsc.org
Phase separation can drive spatial organization of multicomponent mixtures. For instance in
developing animal embryos, effective phase separation descriptions have been used to …

Hydrodynamic coupling of a cilia–mucus system in Herschel–Bulkley flows

Q Mao, U d'Ortona, J Favier - Journal of Fluid Mechanics, 2024 - cambridge.org
The yield stress and shear thinning properties of mucus are identified as critical for ciliary
coordination and mucus transport in human airways. We use here numerical simulations to …

Numerical Analysis of Non-Newtonian Fluid Effects on the Equilibrium Position of a Suspended Particle and Relative Viscosity in Two-Dimensional Flow

K Tomioka, T Fukui - Fluids, 2024 - mdpi.com
A solvent in suspension often has non-Newtonian properties. To date, in order to determine
these properties, many constitutive equations have been suggested. In particular, power-law …

[PDF][PDF] Directional lattice Boltzmann boundary conditions

F Marson - 2022 - researchgate.net
Résumé L'objectif principal de la présente thèse est de proposer des conditions aux limites
courbes très précises visant à réduire le besoin de raffinement de grille ou l'utilisation de …

Two-relaxation-time regularized lattice Boltzmann model for Navier-Stokes equations

Y Yu, Z Qin, S Chen, S Shu, HZ Yuan - arXiv preprint arXiv:2312.10318, 2023 - arxiv.org
In this paper, we propose a novel two-relaxation-time regularized lattice Boltzmann (TRT-
RLB) model for simulating weakly compressible isothermal flows. A free relaxation …