Results 31 to 40 of about 495 (113)

Regularized Stokeslet surfaces

Journal of Computational Physics
An extension of the Method of Regularized Stokeslets (MRS) in three dimensions is developed for triangulated surfaces with a piecewise linear force distribution. The method extends the regularized Stokeslet segment methodology used for piecewise linear curves.
Ferranti, Dana, Cortez, Ricardo
openaire   +3 more sources

Helical swimming in Stokes flow using a novel boundary-element method

, 2013
We apply the boundary-element method to Stokes flows with helical symmetry, such as the flow driven by an immersed rotating helical flagellum. We show that the two-dimensional boundary integral method can be reduced to one dimension using the helical ...
Breuer, Kenneth S., Liu, Bin, Powers, Thomas R.   +2 more
core   +1 more source

Controlled propulsion and separation of helical particles at the nanoscale [PDF]

, 2017
Controlling the motion of nano and microscale objects in a fluid environment is a key factor in designing optimized tiny machines that perform mechanical tasks such as transport of drugs or genetic material in cells, fluid mixing to accelerate chemical ...
Ala-Nissila, Tapio, Alcanzare, Maria Michiko T., Karttunen, Mikko, Ollila, Santtu T. T., Thakore, Vaibhav   +4 more
core   +2 more sources

On the General Analytical Solution of the Kinematic Cosserat Equations [PDF]

, 2016
Based on a Lie symmetry analysis, we construct a closed form solution to the kinematic part of the (partial differential) Cosserat equations describing the mechanical behavior of elastic rods.
D Michels, D Michels, D Robertz, DL Michels, DQ Cao, E Cosserat, F Boyer, F Oliveri, I Riedel-Kruse, J Ainley, J Butcher, J Carminati, J Elgeti, JM Thomas, R Cortez, R Goldstein, R Granger, RTM Filho, SS Antman, T Bächler, W Hereman, WM Seiler, Y Blinkov   +22 more
core   +2 more sources

Radial basis function (RBF)‐based parametric models for closed and open curves within the method of regularized stokeslets [PDF]

International Journal for Numerical Methods in Fluids, 2015
SummaryThe method of regularized Stokeslets (MRS) is a numerical approach using regularized fundamental solutions to compute the flow due to an object in a viscous fluid where inertial effects can be neglected. The elastic object is represented as a Lagrangian structure, exerting point forces on the fluid.
Varun Shankar, Sarah D. Olson
openaire   +2 more sources

Modelling the Fluid Mechanics of Cilia and Flagella in Reproduction and Development

, 2012
Cilia and flagella are actively bending slender organelles, performing functions such as motility, feeding and embryonic symmetry breaking. We review the mechanics of viscous-dominated microscale flow, including time-reversal symmetry, drag anisotropy of
Blake, John R., Loghin, Daniel, Montenegro-Johnson, Thomas D., Smith, Andrew A., Smith, David J.   +4 more
core   +1 more source

Soft Bio‐Microrobots: Toward Biomedical Applications

Advanced Intelligent Systems, Volume 6, Issue 2, February 2024.
Soft bio‐microrobots are created with designs inspired by living creatures or utilizing motile microorganisms or cells. Their compliant and flexible bodies enable them to adapt to intricate environments. This review presents a summary of the design principles, energy sources, and biomedical applications of soft bio‐microrobots. The challenges that must
Zihan Wang, Anke Klingner, Veronika Magdanz, Sarthak Misra, Islam S. M. Khalil   +4 more
wiley   +1 more source

Filter-feeding, near-field flows, and the morphologies of colonial choanoflagellates [PDF]

, 2016
Efficient uptake of prey and nutrients from the environment is an important component in the fitness of all microorganisms, and its dependence on size may reveal clues to the origins of evolutionary transitions to multicellularity.
B. S. C. Leadbeater, C. Pozrikidis, Julius B. Kirkegaard, Raymond E. Goldstein, S. Kim   +4 more
core   +3 more sources

There's more than one way to cancel a regularized Stokeslet

, 2019
The Green's functions of Stokes flow are widely used analytical and computational tools for microscale flows. We adapt a procedure from H.A. Lorentz for the method of images in Stokes flow to the regularized setting. Our solutions differ from those previously reported, a surprising result given the uniqueness theory for elliptic partial differential ...
Mitchell, William H., Pantova, Dona
openaire   +2 more sources

Realistic air filter media performance simulation. Part II: Beyond finite-volume computational fluid dynamics procedures [PDF]

, 2013
One form of numerical simulation of flow and particle capture by air filter media sees gases as continuous fluids, influenced by the macro-properties viscosity, density, and pressure.
Rivers, R., Tronville, Paolo Maria, Zhou, B.   +2 more
core   +1 more source