Results 261 to 270 of about 34,022 (289)

The Effect of Boundaries on the Velocity Deficit and the Limit of Gaseous Detonations

Combustion Science and Technology, 1971
Abstract Effects of boundaries on the gaseous detonation velocity and on detonability limits are examined. A generalized Karman-Pohlhausen procedure is employed to obtain a system of quasi one-dimensional equations which include the boundary effects correctly.
exaly   +2 more sources

Documentation of the Recovery Course and Deficit Side Localization of an Acute Unilateral Vestibular Deficit Using Four-quadrant Diagrams of Slow Phase Velocity

Acta Oto-Laryngologica, 1991
The horizontal vestibulo-ocular reflex was studied in normals and in patients with an acute or compensated unilateral peripheral vestibular deficit (PVD) in order to determine the efficacy of various response measures of deficit side and central compensation for high rotation velocities.
J H J Allum, M Ura
exaly   +4 more sources

The Relationship Between Vortex Pairings and Velocity Deficit Recovery in a Wind Turbine Wake

Springer Proceedings in Physics, 2019
The rapid recovery of a velocity deficit in a wind turbine wake was studied using unsteady simulations of Navier-Stokes equations. The results indicate that as the tip speed ratio (TSR) increased, the velocity deficit in the far-wake region was reduced while the deficit in the near-wake increased. This was caused in part by the difference of tip vortex
Keita Kimura, Yasutada Tanabe, Yuichi Matsuo   +2 more
exaly   +2 more sources

Fast optimisation of tidal stream turbine positions for power generation in small arrays with low blockage based on superposition of self-similar far-wake velocity deficit profiles

Renewable Energy, 2016
Far wake velocities of a single horizontal axis three-bladed turbine in shallow flow have been measured previously in the laboratory and shown to have self-similar velocity deficit profiles.
Peter K Stansby, Tim Stallard
exaly   +2 more sources

Analytical study on detonation pressure and velocity deficit

Physics of Fluids, 2022
Steady detonation is studied analytically from the viewpoints of conservation laws and entropy change. The mechanisms affecting the pressure at the end of the rarefaction wave and the velocity deficit are examined. Mass, energy, and momentum conservation are applied in the one-dimensional flow based on the Zeldovich–von Neumann–Doering model.
Takeshi Kanda, Hisataka Amano
openaire   +1 more source

Detonation propagation with velocity deficits in narrow channels

Proceedings of the Combustion Institute, 2011
Abstract Propagation limits of detonations in narrow channels have been studied with a focus on velocity deficits and variation in cell widths. A channel was formed by a pair of metal plates of 1500 mm length which were inserted in a detonation tube of 50.5 mm inner diameter.
K. Ishii, M. Monwar
openaire   +1 more source

Decreased Head Circumference Velocity as Related to Developmental Deficit in Infancy

Pediatric Neurology, 2012
We evaluated the significance of head circumference growth velocity as related to developmental deficits during infancy. Head circumferences, lengths, and developmental diagnoses were retrieved in a standard manner at ≥ 2 time points from 437 infants with developmental deficits, and 3909 normally developing infants.
Galit, Tal, Ayala, Cohen, Sonia, Habib, Emanuel, Tirosh   +3 more
openaire   +2 more sources

Velocity deficits and detonability limits of hydrogen-oxygen detonations

Acta Astronautica, 1974
Abstract Velocity deficits and detonability limits of stoichiometric hydrogen-oxygen gas detonations have been calculated at subatmospheric pressures (50–760 torr), using a quasi-one-dimensional ZDN model. The effect of the viscous boundary layer was accounted for by allowing for cross-sectional area changes in the flow.
J.E. Dove, B.J. Scroggie, H. Semerjian
openaire   +1 more source

Spinning detonation and velocity deficit in small diameter tubes

Proceedings of the Combustion Institute, 2009
Abstract Detonation velocities and soot patterns of H2/O2 mixtures were measured in glass tubes of 3, 6 and 10 mm diameters at pressures ranging from 70 to 400 Torr and equivalence ratios of 0.5–1.5. It was confirmed that the transition from a multi-head to a spinning detonation occurred at the pressure where the cell size is equal to the length of ...
S. Kitano, M. Fukao, A. Susa, N. Tsuboi, A.K. Hayashi, M. Koshi   +5 more
openaire   +1 more source

A study on velocity deficits of detonation waves in narrow gaps

Proceedings of the Combustion Institute, 2002
The propagation behavior of detonation waves in narrow gaps for hydrogen/oxygen/argon mixtures has been investigated in terms of velocity deficits. The gap was formed by a pair of metal plates 500 mm in length which were inserted in a detonation tube.
K. Ishii, K. Itoh, T. Tsuboi
openaire   +1 more source