Hydrodynamic propulsion of human sperm [PDF]
, 2009 The detailed fluid mechanics of sperm propulsion are fundamental to our understanding of reproduction. In this paper, we aim to model a human sperm swimming in a microscope slide chamber.
ALLAN A. PACEY +10 more
core +1 more source
The orientation of swimming bi-flagellates in shear flows [PDF]
, 2012 Biflagellated algae swim in mean directions that are governed by their environments. For example, many algae can swim upward on average (gravitaxis) and toward downwelling fluid (gyrotaxis) via a variety of mechanisms.
Bees, M.A., O'Malley, S.
core +1 more source
CUBICALLY REGULARIZED STOKESLETS FOR FAST PARTICLE SIMULATIONS OF LOW-REYNOLDS-NUMBER DROP FLOWS [PDF]
Chemical Engineering Communications, 2009 Swarms of Stokeslets have previously been shown to be effective for simulating three-dimensional, free-surface, buoyancy-driven drop flows at unit viscosity ratio, including interfacial rupture and pass-through phenomena. This article presents an efficient marker-and-cell/fast Fourier transform (MAC-FFT) algorithm that yields N log N scaling of the ...
Ludwig C. Nitsche +1 more
openaire +1 more source
Orientation dependent elastic stress concentration at tips of slender objects translating in viscoelastic fluids [PDF]
, 2019 Elastic stress concentration at tips of long slender objects moving in viscoelastic fluids has been observed in numerical simulations, but despite the prevalence of flagellated motion in complex fluids in many biological functions, the physics of stress ...
Guy, Robert D. +2 more
core +3 more sources
Microtransformers: controlled microscale navigation with flexible robots [PDF]
, 2018 Artificial microswimmers are a new technology with promising microfluidics and biomedical applications, such as directed cargo transport, microscale assembly, and targeted drug delivery. A fundamental barrier to realising this potential is the ability to
Montenegro-Johnson, Thomas D.
core +2 more sources
A Simple Method for Computing Singular or Nearly Singular Integrals on Closed Surfaces [PDF]
, 2016 We present a simple, accurate method for computing singular or nearly singular integrals on a smooth, closed surface, such as layer potentials for harmonic functions evaluated at points on or near the surface.
Beale, J. Thomas +2 more
core +1 more source
The Role of the Double-Layer Potential in Regularised Stokeslet Models of Self-Propulsion
Fluids, 2021 The method of regularised stokeslets is widely used to model microscale biological propulsion. The method is usually implemented with only the single-layer potential, the double-layer potential being neglected, despite this formulation often not being justified a priori due to nonrigid surface deformation.
David J. Smith +3 more
openaire +3 more sources
Hydrodynamics of Suspensions of Passive and Active Rigid Particles: A Rigid Multiblob Approach [PDF]
, 2016 We develop a rigid multiblob method for numerically solving the mobility problem for suspensions of passive and active rigid particles of complex shape in Stokes flow in unconfined, partially confined, and fully confined geometries.
Bhalla, A. Pal Singh +5 more
core +3 more sources
Regularized Stokeslet rings: An efficient method for axisymmetric Stokes flow with application to the growing pollen tube [PDF]
Physical Review Fluids, 2019 36 pages, 19 figures ; edited authors ...
Tyrrell, James +2 more
openaire +2 more sources
Rotational dynamics of a superhelix towed in a Stokes fluid
, 2007 Motivated by the intriguing motility of spirochetes (helically-shaped bacteria that screw through viscous fluids due to the action of internal periplasmic flagella), we examine the fundamental fluid dynamics of superhelices translating and rotating in a ...
Charon N. W. +5 more
core +1 more source