Results 271 to 280 of about 369,920 (316)

Velocity distributions in glottal models

Journal of Voice, 1996
Velocity distributions within three models of the human larynx, namely, a rigid plexiglas model, an excised canine larynx, and a computational model are investigated with experimental and theoretical analyses. A plexiglas wind tunnel with interchangeable glottal constrictions was used as a two-dimensional steady-flow model to measure velocity and ...
F, Alipour, R, Scherer, J, Knowles
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Myocardial rapid velocity distribution

Ultrasound in Medicine & Biology, 2001
Myocardial motion exhibits frequency components of up to 100 Hz, as found by a phased tracking method. To simultaneously measure the rapid and minute velocity signals at multiple points along the surface of the left ventricle (LV), in this study, conventional ultrasonic diagnosis equipment was modified to allow 10 scan lines from a sector scanner to be
H, Kanai, Y, Koiwa
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Velocity distribution in aortic flow

Cardiovascular Research, 1973
Velocity measurements in the dog aorta using a thin film anemometer are described. The instantaneous velocity profiles for the ascending and descending aorta indicate a large inertial core region with relatively thin boundary layers; pronounced non-uniformities are present in the ascending aorta.
C, Clark, D L, Schultz
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Electron Velocity Distributions in Gases

American Journal of Physics, 1963
An analytical expression for the velocity-distribution function for the low-energy region (u < u1) is obtained from the Maxwell-Boltzmann transport equation on the assumption that inelastic collisions occur at u = u1. The exact linear differential equation that defines the distribution function in the high-energy (u > u1) region is also ...
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Velocity distributions in nonlinear systems

Physical Review A, 1990
Des resultats numeriques indiquent que, dans certaines situations, la distribution de vitesse maxwellienne pour un sous-ensemble de particules test de faible masse en equilibre avec un bain thermique n'est pas valable.
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Velocity Distribution.

2009
Abstract Previous chapters have discussed the velocity of individual fluid elements (point velocities), denoted as ux, uy, uz, and the average velocity through a stream cross section, denoted as U. The main objective of the present chapter is to explore the connection between point velocities and cross-section average velocity by ...
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Analytical Velocity Distribution

Journal of the Hydraulics Division, 1978
The concepts and solutions presented here should be helpful not only for their academic value but also as aids for modeling and interpreting velocity distributions in open channel and pipe flows. Their applicability should be limited only by the requirements of fully developed uniform and the assumption of a parabolic distribution of turbulent ...
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Velocity Distributions of Camphor Particle Ensembles

The Journal of Physical Chemistry B, 2007
The spatial distribution of ensembles of camphor particles on a water surface can be classified into four phases with the following properties, for increasing density: (I) no clustering of particles and a minimum distance distribution similar to that of a 2D ideal gas; (II) reminiscent of a gas with clustering of particles; (III) net-like structure ...
Schulz, O., Markus, M.
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Particle velocity distribution in saltation transport

Physical Review E, 2012
We report on wind-tunnel measurements of particle velocity distribution in aeolian transport. By performing extended statistics, we show that for saltation occurring over an erodible bed the vertical lift-off velocity distributions deviate significantly from a Gaussian law and exhibit a long tail accurately described by a lognormal law.
Ho, Tuan Duc, Dupont, Pascal, Ould El Moctar, Ahmed, Valance, Alexandre   +3 more
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Velocity index factor sensitivity to velocity distribution

Australasian Journal of Water Resources, 2008
Open channel flow monitoring is moving towards velocity as well as depth sensing to calculate discharge by the continuity method. Such technology always requires an index factor to calculate mean velocity from sensed velocity, because the sensing zone never covers the entire cross section.
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