Results 21 to 30 of about 1,299,345 (347)
High Dynamic Velocity Range Particle Image Velocimetry Using Multiple Pulse Separation Imaging
Sensors, 2010 The dynamic velocity range of particle image velocimetry (PIV) is determined by the maximum and minimum resolvable particle displacement. Various techniques have extended the dynamic range, however flows with a wide velocity range (e.g., impinging jets ...
Tadhg S. O’Donovan, Tim Persoons
doaj +1 more source
Near-wall velocity measurements by Particle-Shadow-Tracking [PDF]
, 2007 We report a new method to measure the velocity of a fluid in the vicinity of a wall. The method, that we call Particle-Shadow Tracking (PST), simply consists in seeding the fluid with a small number of fine tracer particles of density close to that of ...
AA Townsend +7 more
core +6 more sources
Enhancement of Heading Accuracy for GPS/INS by Employing Average Velocity in Low Dynamic Situations
IEEE Access, 2020 In this paper, we proposed an algorithm that improves the heading accuracy of the global positioning system (GPS)/inertial navigation system (INS) integrated system used in automobiles by manipulating INS velocity and GPS velocity measurements.
Min Jun Choi +3 more
doaj +1 more source
Sensors, 2014 An experimental investigation of sonic air, CO2 and Helium transverse jets in Mach 5 cross flow was carried out over a flat plate. The jet to freestream momentum flux ratio, J, was kept the same for all gases.
Erinc Erdem +2 more
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Wave Measurements Using GPS Velocity Signals
Sensors, 2011 This study presents the idea of using GPS-output velocity signals to obtain wave measurement data. The application of the transformation from a velocity spectrum to a displacement spectrum in conjunction with the directional wave spectral theory are the ...
Chia Chuen Kao +2 more
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Effects of Inclination on Measuring Velocity Dispersion and Implications for Black Holes [PDF]
, 2014 The relation of central black hole mass and stellar spheroid velocity dispersion (the M-$\sigma$ relation) is one of the best-known and tightest correlations linking black holes and their host galaxies.
Bellovary, Jillian +7 more
core +1 more source
CEPHEID PULSATIONS FROM RADIAL VELOCITY MEASUREMENTS
Odessa Astronomical Publications, 2017 We discuss the results of our many-year program of Cepheid radial velocities concerning the Hertzsprung sequence in radial-velocity curves, double-mode Cepheids, the period-radius relation, binary Cepheids.
N. A. Gorynya, N. N. Samus
doaj +1 more source
Tidal influence on Rutford Ice Stream, West Antarctica: observations of surface flow and basal processes from closely-spaced GPS and passive seismic stations [PDF]
, 2008 High-resolution surface velocity measurements and passive seismic observations from Rutford Ice Stream, West Antarctica, 40 km upstream from the grounding line are presented.
A.E. Behar +11 more
core +2 more sources
The Rising Stellar Velocity Dispersion of M87 from Integrated Starlight [PDF]
, 2014 We have measured the line-of-sight velocity distribution from integrated stellar light at two points in the outer halo of M87 (NGC 4486), the second-rank galaxy in the Virgo Cluster.
Cradit, Mason +2 more
core +2 more sources
Absolute velocity measurements in sunspot umbrae
, 2018 In sunspot umbrae, convection is largely suppressed by the strong magnetic field. Previous measurements reported on negligible convective flows in umbral cores.
Doerr, H. -P. +5 more
core +1 more source