Results 1 to 10 of about 2,065 (92)
Nihon Kikai Gakkai ronbunshu, 2018 This report describes the study on the lubrication characteristics of porous journal bearings as a DC spindle motor's bearing system made with oil impregnated sintered materials having some hydrodynamic shapes. Herring Bone (I & II), Three Lobed
Shigeru OHTSUKA +3 more
doaj +3 more sources
Nihon Kikai Gakkai ronbunshu, 2019 This report describes the study on the lubrication characteristics of porous journal bearings, which were made with oil impregnated sintered materials having some hydrodynamic shapes, to apply them for a DC Spindle Motor’s bearing system. Herring Bone (I
Shigeru OHTSUKA +3 more
doaj +3 more sources
Mechanical oscillations enhance gene delivery into suspended cells. [PDF]
Sci Rep, 2016 published_or_final_versio
Zhou ZL +6 more
europepmc +2 more sources
Interplay of air and sand: Faraday heaping unravelled [PDF]
, 2007 We report on numerical simulations of a vibrated granular bed including the effect of the ambient air, generating the famous Faraday heaps known from experiment.
Gerner, Henk Jan van +3 more
core +5 more sources
Exact stationary solutions of the parametrically driven and damped nonlinear Dirac equation [PDF]
, 2019 Two exact stationary soliton solutions are found in the parametrically driven and damped nonlinear Dirac equation. The parametric force considered is a complex ac force. The solutions appear when their frequencies are locked to half the frequency of the
Quintero, Niurka R. +1 more
core +1 more source
On the steady streaming flow due to high-frequency vibration in nearly inviscid liquid bridges [PDF]
, 1998 The steady streaming flow due to vibration in capillary bridges is considered in the limiting case when both the capillary Reynolds number and the non-dimensional vibration frequency (based on the capillary time) are large.
Nicolás, José A. +2 more
core +2 more sources
Pressure measurement in two-dimensional horizontal granular gases [PDF]
, 2003 International audienceA two-dimensional granular gas is produced by vibrating vertically a partial layer of beads on a horizontal plate. Measurements of the force applied by the granular gas to the sidewalls of the container, or granular pressure, are ...
Géminard, J.-C, Laroche, C
core +2 more sources
Low-frequency oscillations in narrow vibrated granular systems [PDF]
, 2013 We present simulations and a theoretical treatment of vertically vibrated granular media. The systems considered are confined in narrow quasi-two-dimensional and quasi-one-dimensional (column) geometries, where the vertical extension of the container is ...
Luding, S. +2 more
core +4 more sources
A Simple Model for Faraday Waves
, 1996 We show that the linear-stability analysis of the birth of Faraday waves on the surface of a fluid is simplified considerably when the fluid container is driven by a triangle waveform rather than by a sine wave. The calculation is simple enough to use in
Bechhoefer, John, Johnson, Brad
core +1 more source
Shear instabilities in granular mixtures
, 2005 Dynamical instabilities in fluid mechanics are responsible of a variety of important common phenomena, such as waves on the sea surface or Taylor vorteces in Couette flow. In granular media dynamical instabilities has just begun to be discovered. Here we
Ciamarra, Massimo Pica +2 more
core +1 more source