Search Results - "Gilbert, Andrew D."

Metachronal waves in magnetic micro-robotic paddles for artificial cilia by Bryan, Matthew T., Martin, Elizabeth L., Pac, Aleksandra, Gilbert, Andrew D., Ogrin, Feodor Y.

“…Biological cilia generate fluid movement within viscosity-dominated environments using beating motions that break time-reversal symmetry. This creates a…”
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Dynamo action in the ABC flows using symmetries by Jones, Samuel E., Gilbert, Andrew D.

“…This paper concerns kinematic dynamo action by the 1:1:1 ABC flow, in the highly conducting limit of large magnetic Reynolds number . The flow possesses 24…”
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A Geometric Look at Momentum Flux and Stress in Fluid Mechanics by Gilbert, Andrew D., Vanneste, Jacques

“…We develop a geometric formulation of fluid dynamics, valid on arbitrary Riemannian manifolds, that regards the momentum-flux and stress tensors as…”
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A geometric look at MHD and the Braginsky dynamo by Gilbert, Andrew D., Vanneste, Jacques

“…This paper considers magnetohydrodynamics (MHD) and some of its applications from the perspective of differential geometry, considering the dynamics of an…”
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Zonostrophic instabilities in magnetohydrodynamic Kolmogorov flow by Algatheem, Azza M., Gilbert, Andrew D., Hillier, Andrew S.

“…A classic stability problem relevant to many applications in geophysical and astrophysical fluid mechanics is that of Kolmogorov flow, a unidirectional purely…”
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Magnetically controlled ferromagnetic swimmers by Hamilton, Joshua K., Petrov, Peter G., Winlove, C. Peter, Gilbert, Andrew D., Bryan, Matthew T., Ogrin, Feodor Y.

“…Microscopic swimming devices hold promise for radically new applications in lab-on-a-chip and microfluidic technology, diagnostics and drug delivery etc. In…”
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A new class of magnetically actuated pumps and valves for microfluidic applications by Hamilton, Joshua K., Bryan, Matthew T., Gilbert, Andrew D., Ogrin, Feodor Y., Myers, Thomas O.

“…We propose a new class of magnetically actuated pumps and valves that could be incorporated into microfluidic chips with no further external connections. The…”
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Disturbance Caused by Aerial Waterfowl Surveys During the Nonbreeding Season by GILBERT, ANDREW D., JACQUES, CHRISTOPHER N., LANCASTER, JOSEPH D., YETTER, AARON P., HAGY, HEATH M.

“…Aerial surveys flown at low altitudes allow detection, identification, and enumeration of waterfowl and other waterbirds, but few studies have assessed…”
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Dissipative structures in a nonlinear dynamo by Gilbert, Andrew D., Ponty, Yannick, Zheligovsky, Vladislav

“…This article considers magnetic field generation by a fluid flow in a system referred to as the Archontis dynamo: a steady nonlinear MHD state is driven by a…”
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Theory of Ferromagnetic Microswimmers by Gilbert, Andrew D., Ogrin, Feodor Y., Petrov, Peter G., Winlove, C. Peter

“…This paper considers the dynamics of a microscale swimmer based on two magnetic beads that are elastically coupled together. A time-varying external magnetic…”
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Advected fields in maps-III. Passive scalar decay in baker's maps by Gilbert, Andrew D.

“…The decay of passive scalars is studied in baker's maps with uneven stretching, in the limit of weak diffusion. The map is alternated with diffusion, and three…”
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Pulse-train solutions of a spatially heterogeneous amplitude equation arising in the subcritical instability of narrow gap spherical Couette flow by Blockley, Edward W., Bassom, Andrew P., Gilbert, Andrew D., Soward, Andrew M.

“…We investigate some complex solutions a ( x , t ) of the heterogeneous complex-Ginzburg–Landau equation ∂ a / ∂ t = [ λ ( x ) + i x − | a | 2 ] a + ∂ 2 a / ∂ x…”
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Nonaxisymmetric stokes flow between concentric cones by Hall, Oskar, Hills, Christopher P., Gilbert, Andrew D.

“…We study the fully three-dimensional Stokes flow within a geometry consisting of two infinite cones with coincident apices. The Stokes approximation is valid…”
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Slow flow between concentric cones by Hall, Oskar, Hills, Christopher P., Gilbert, Andrew D.

“…This paper considers the low-Reynolds-number flow of an incompressible fluid contained in the gap between two coaxial cones with coincident apices and bounded…”
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Advected fields in maps: II. Dynamo action in the stretch-fold-shear map by Gilbert, Andrew D.

“…The growth of magnetic field is considered in the stretch-fold-shear map in the limit of weak diffusion. Numerical results are given for insulating, perfectly…”
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Nonlinear dynamo action in hydrodynamic instabilities driven by shear by Zhang, Pu, Gilbert, Andrew D.

“…The present article considers dynamo action in flows driven by Ekman and Taylor-Couette instabilities. The system comprises a rotating, horizontal plane layer…”
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Postbreeding ecology of wood ducks in the Illinois River Valley by Gilbert, Andrew D., Yetter, Aaron P., Hine, Christopher S., Lancaster, Joseph D., Osborn, Joshua M., Kross, Chelsea S., Fournier, Auriel M. V.

“…Abstract The wood duck ( Aix sponsa ) consistently ranks within the top 5 harvested duck species for both Illinois and the Mississippi Flyway. While…”
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Dynamo action in flows with cat's eyes by Courvoisier, Alice, Gilbert, Andrew D., Ponty, Yannick

“…This paper considers dynamo action in steady fluid flows having a cat's eye stream line topology. The flows considered are two-dimensional, depending on x and…”
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Visibility Bias of Waterbirds During Aerial Surveys in the Nonbreeding Season by GILBERT, ANDREW D., JACQUES, CHRISTOPHER N., LANCASTER, JOSEPH D., YETTER, AARON P., HAGY, HEATH M.

“…Aerial surveys for waterfowl and other waterbirds provide abundance estimates that are commonly used by state and federal agencies for waterfowl and wetland…”
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The relaxation of vorticity fluctuations in approximately elliptical streamlines by Bassom, Andrew P., Gilbert, Andrew D.

“…This paper generalizes previous asymptotic studies which describe the winding–up of vorticity fluctuations in axisymmetric streamlines. We consider a steady…”
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