Results 291 to 300 of about 780,077 (343)
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AIP Conference Proceedings, 1976
E d i t o r’s note: This is a reprint (slightly edited) of a paper of the same title that appeared in the book Physics and Our World: A Symposium in Honor of Victor F. Weisskopf, published by the American Institute of Physics (1976). The personal tone of the original talk has been preserved in the paper, which was itself a slightly edited transcript of
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E d i t o r’s note: This is a reprint (slightly edited) of a paper of the same title that appeared in the book Physics and Our World: A Symposium in Honor of Victor F. Weisskopf, published by the American Institute of Physics (1976). The personal tone of the original talk has been preserved in the paper, which was itself a slightly edited transcript of
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Transonic low-Reynolds number airfoils
Journal of Aircraft, 1991Airfoils operating in the unexplored high-Mach—low-Reynolds number regime are computationally investigated. The motivations are 1) quantificatio n of achievable airfoil performance levels; 2) quantificatio n of parameter sensitivities which impact vehicle sizing; 3) identification of possible shortcomings in the computational methods employed; and 4 ...
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2009
Newton’s second law of motion stipulates that the rate of change of momentum of a fluid parcel must be balanced by the body force exerted over the parcel volume and by the surface force exerted on the parcel boundary. Under certain conditions, the rate of change of momentum of the parcel is small compared to the body and surface force, and can be ...
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Newton’s second law of motion stipulates that the rate of change of momentum of a fluid parcel must be balanced by the body force exerted over the parcel volume and by the surface force exerted on the parcel boundary. Under certain conditions, the rate of change of momentum of the parcel is small compared to the body and surface force, and can be ...
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Self-Propulsion at Low Reynolds Number
Physical Review Letters, 1987We formulate the problem of self-propulsion at low Reynolds number in terms of a gauge field over the space of shapes. The computation of this field is discussed, and carried out in some examples. We apply our results to determine maximally efficient infinitesimal swimming motions of spheres and circular cylinders.
, Shapere, , Wilczek
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Quiet swimming at low Reynolds number
Physical Review E, 2015The stresslet provides a simple model of the flow created by a small, freely swimming and neutrally buoyant aquatic organism and shows that the far field fluid disturbance created by such an organism in general decays as one over distance squared. Here we discuss a quieter swimming mode that eliminates the stresslet component of the flow and leads to a
Anders, Andersen +2 more
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Low Reynolds number suspension gravity currents
The European Physical Journal E, 2013The extension of a gravity current in a lock-exchange problem, proceeds as square root of time in the viscous-buoyancy phase, where there is a balance between gravitational and viscous forces. In the presence of particles however, this scenario is drastically altered, because sedimentation reduces the motive gravitational force and introduces a finite ...
Sandeep, Saha +2 more
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2015
In this chapter, we provide a brief description of some of the main results of low-Reynolds-number hydrodynamics. In particular, we introduce the general subject by way of several example flows and provide derivations or explanations of some of the fluid dynamics themes that are used in later chapters of this book: channel flows, Darcy’s approximation,
Howard A. Stone, Camille Duprat
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In this chapter, we provide a brief description of some of the main results of low-Reynolds-number hydrodynamics. In particular, we introduce the general subject by way of several example flows and provide derivations or explanations of some of the fluid dynamics themes that are used in later chapters of this book: channel flows, Darcy’s approximation,
Howard A. Stone, Camille Duprat
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Optimal Length of Low Reynolds Number Nanopropellers
Nano Letters, 2015Locomotion in fluids at the nanoscale is dominated by viscous drag. One efficient propulsion scheme is to use a weak rotating magnetic field that drives a chiral object. From bacterial flagella to artificial drills, the corkscrew is a universally useful chiral shape for propulsion in viscous environments.
Walker (Schamel), D. +4 more
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2015
Abstract This chapter uses asymptotic analysis to study low-Reynolds-number viscous flows. It considers two classical problems of low-Reynolds-number flow theory: flow past a sphere and past a circular cylinder. When dealing with the sphere flow, the chapter shows that in the ‘inner region’ the Navier–Stoke’s equations reduce, in the ...
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Abstract This chapter uses asymptotic analysis to study low-Reynolds-number viscous flows. It considers two classical problems of low-Reynolds-number flow theory: flow past a sphere and past a circular cylinder. When dealing with the sphere flow, the chapter shows that in the ‘inner region’ the Navier–Stoke’s equations reduce, in the ...
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Low Reynolds number fluidic flowmetering
Journal of Physics E: Scientific Instruments, 1988The capability of flowmeters to function at small Reynolds numbers (
R F Boucher, C Mazharoglu
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