Results 1 to 10 of about 35,071 (98)
Lift force in odd compressible fluids [PDF]
Physical Review E, 2023 We compute the response matrix for a tracer particle in a compressible fluid with odd viscosity living on a two-dimensional surface. Unlike the incompressible case, we find that an odd compressible fluid can produce an odd lift force on a tracer particle.
Lier, Ruben +5 more
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A Lifting Argument for the Generalized Grigorieff Forcing [PDF]
Notre Dame Journal of Formal Logic, 2016 In this paper, the authors study a generalized version of Grigorieff forcing at inaccessible cardinals and use it to present a new proof of Woodin's celebrated result for forcing the failure of GCH at a measurable cardinal from optimal hypotheses. The forcing, like the case of \textit{S.-D. Friedman} and \textit{K. Thompson} [J. Symb. Log. 73, No.
Radek Honzik, Jonathan Verner
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Considerations on the Lift Force
International Journal of Advanced Engineering Research and Science, 2017 Many authors at criticizing the conventional explanation of aerodynamic lift based on Bernoulli's law commit the same mistake laying within the scope of mechanics and ignoring the effects of viscosity in the generation of forces. Because it is an irreversible process, we affirm that it is not possible to generate lift without increasing entropy.
Osvaldo Missiato +3 more
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Lift forces in granular media [PDF]
Physics of Fluids, 2014 The paper presents an experimental and numerical study of the forces experienced by a cylinder moving horizontally in a granular medium under gravity. Despite the symmetry of the object, a strong lift force is measured. Whereas the drag force increases linearly with depth, the lift force is shown to saturate at depths much greater than the cylinder ...
François Guillard +2 more
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The Forces which lift Aeroplanes [PDF]
Nature, 1924 PROF. BJERKNES, in his Royal Institution lecture (NATURE, September 27, p. 472; October 4, p. 508), introduces the phenomenon of “acoustic repulsion” before going on to the accepted circulation theory of aeroplane lift. Both these are discussed in Rayleigh's “Collected Papers,” Nos. 52 and 53 respectively; “Note on Acoustic Repulsion” (Phil. Mag., 1878,
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Lift force due to odd Hall viscosity [PDF]
Physical Review E, 2016 LaTeX, 4 pages. As accepted for publication in PRE.
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Direct Measurement of the Elastohydrodynamic Lift Force at the Nanoscale [PDF]
Physical Review Letters, 2020 We present the first direct measurement of the elastohydrodynamic lift force acting on a sphere moving within a viscous liquid, near and along a soft substrate under nanometric confinement. Using atomic force microscopy, the lift force is probed as a function of the gap size, for various driving velocities, viscosities, and stiffnesses.
Zaicheng Zhang +5 more
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Scaling of lifting forces in relation to object size in whole body lifting [PDF]
Ergonomics, 2005 Subjects prepare for a whole body lifting movement by adjusting their posture and scaling their lifting forces to the expected object weight. The expectancy is based on visual and haptic size cues. This study aimed to find out whether lifting force overshoots related to object size cues disappear or persist over a number of repeated lifts. In addition,
Kingma, I. +2 more
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Lift force improvements for the micromechanical flying insect [PDF]
Proceedings 2003 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2003) (Cat. No.03CH37453), 2004 This paper presents some recent improvements in the fabrication and control of the micromechanical flying insect (MFI), a centimeter sized aerial vehicle currently being developed at the University of California, Berkeley. We report a lift of 506 /spl mu/N from a single wing, which is sufficient for a 100 mg machine to lift itself off the ground.
Srinath Avadhanula +4 more
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The upper limit and lift force within inertial focusing in high aspect ratio curved microfluidics. [PDF]
Sci Rep, 2021 Cruz J, Hjort K.
europepmc +1 more source