Results 281 to 290 of about 7,146,269 (348)
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Abstract This chapter reviews basic concepts in fluid dynamics that are useful to the practice of anesthesiology. Laminar flow occurs when fluids flow in an orderly fashion without mixing. Turbulent flow involves mixing within the fluid and creates additional resistance to flow. The Reynolds number equation describes factors that promote
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Velocity-Vorticity Patterns in Turbulent Flow
Physical Review Letters, 1985Direct numerical simulation of the Navier-Stokes equations is used for the investigation of local helicity fluctuations in plane Poiseuille (channel) and Taylor-Green vortex flows. It is shown that in regions of high dissipation, the cosine of the angle between velocity and vorticity is evenly distributed; in regions of low dissipation, the velocity ...
, Pelz +4 more
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Flow velocity measurement with ac gradients
Magnetic Resonance in Medicine, 1987AbstractTwo NMR experiments are described that use ac field gradients to measure flow velocities. Both experiments perform no spacial localization; instead, fluid velocity is converted to a resonance frequency shift. Thus, by Fourier transformation of a single FID or echo train the distribution of velocities is available. The first experiment uses only
J H, Walton, M S, Conradi
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Ice velocity and thickness of the world’s glaciers
Nature Geoscience, 2022R. Millan +3 more
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American Journal of Physics, 1978
We point out and discuss a frequently misunderstood, overlooked, or disregarded relationship between the energy-momentum tensor and the velocity of energy flow.
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We point out and discuss a frequently misunderstood, overlooked, or disregarded relationship between the energy-momentum tensor and the velocity of energy flow.
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Neonatal Cerebral Blood Flow Velocity Measurement
Clinics in Perinatology, 1985This article discusses the background, methodology, previous clinical studies, and the clinical role and limitations of the noninvasive Doppler technique in the assessment of the cerebral circulation of the newborn infant.
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Noninvasive transcranial Doppler ultrasound recording of flow velocity in basal cerebral arteries.
Journal of Neurosurgery, 1982R. Aaslid, T. Markwalder, H. Nornes
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Exploring the optimal experimental setup for surface flow velocity measurements using PTV
Environmental Monitoring & Assessment, 2018S. D. Sasso +4 more
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