Results 151 to 160 of about 124,500 (193)
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Plasma wave turbulence at planetary bow shocks
Nature, 1981Voyager 1 observations of plasma wave turbulence at Saturn's bow shock are discussed and compared with corresponding data from Jupiter, earth, and Venus. The results suggest that the plasma instabilities that develop at the lower Mach number bow shocks of the terrestrial planets differ from those found at the high Mach number bow shocks of the outer ...
F. L. Scarf, D. A. Gurnett, W. S. Kurth
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Journal of Hydrodynamics, 2013
Abstract The bow wave generated by a ship hull that advances at constant speed in calm water is considered. The bow wave only depends on the shape of the ship bow (not on the hull geometry aft of the bow wave). This basic property makes it possible to de- termine the bow waves generated by a canonical family of ship bows defined in terms of ...
Francis Noblesse +4 more
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Abstract The bow wave generated by a ship hull that advances at constant speed in calm water is considered. The bow wave only depends on the shape of the ship bow (not on the hull geometry aft of the bow wave). This basic property makes it possible to de- termine the bow waves generated by a canonical family of ship bows defined in terms of ...
Francis Noblesse +4 more
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Journal of the Atmospheric Sciences, 1987
Abstract The thunderstorm solitary gust or bow wave, observed by Doviak and Ge, is examined from the viewpoint of boundary layer wave theory. It is concluded that all its well defined characteristics are consistently modeled as a bow wave of ducted atmospheric modes accompanying the traveling storm.
G. Chimonas, Carmen J. Nappo
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Abstract The thunderstorm solitary gust or bow wave, observed by Doviak and Ge, is examined from the viewpoint of boundary layer wave theory. It is concluded that all its well defined characteristics are consistently modeled as a bow wave of ducted atmospheric modes accompanying the traveling storm.
G. Chimonas, Carmen J. Nappo
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AIAA Journal, 1983
Es wurden für kleine Schiffgeschwindigkeiten Bugwellenformen um ein umgekehrtes symmetrisches Joukowsky-Profil (Hinterkante ist der Bug des Schiffes) bestimmt. Dabei wird die Dispersionsgleichung mit der Charakteristikenmethode numerisch gelöst. Die Wellenform erhält man dann durch Verfolgen der Punkte konstanter Phasenfunktion.
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Es wurden für kleine Schiffgeschwindigkeiten Bugwellenformen um ein umgekehrtes symmetrisches Joukowsky-Profil (Hinterkante ist der Bug des Schiffes) bestimmt. Dabei wird die Dispersionsgleichung mit der Charakteristikenmethode numerisch gelöst. Die Wellenform erhält man dann durch Verfolgen der Punkte konstanter Phasenfunktion.
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Wideband Millimeter-Wave Bow-Tie Antenna
Journal of Electromagnetic Waves and Applications, 2009In this paper, a wideband bow-tie slot antenna that couples to an extended hemispherical lens to realize high directivity, is proposed. The design consists of a conventional bow-tie with a tuning stub, which yields input impedance of 50 Ω over broad operating bandwidth.
R. Shireen, S. Shi, D. W. Prather
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Journal of Geophysical Research, 1967
A model for a strong plasma shock wave with a structure determined by ion wave instabilities has been developed. The magnetic field structure of the shock wave is further investigated and found to have many features in agreement with satellite observations of the earth's bow shock.
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A model for a strong plasma shock wave with a structure determined by ion wave instabilities has been developed. The magnetic field structure of the shock wave is further investigated and found to have many features in agreement with satellite observations of the earth's bow shock.
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1969
Abstract : Special approximations are needed in order to analyze the free surface flow in the vicinity of the bow of blunt ships. In the case of thin ships the inner bow flow reduces to a two-dimensional flow in a vertical plane normal to the bow. The situation at the confluence of a blunt bow and the free surface is clarified first.
M. P. Tulin, G. Dagan
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Abstract : Special approximations are needed in order to analyze the free surface flow in the vicinity of the bow of blunt ships. In the case of thin ships the inner bow flow reduces to a two-dimensional flow in a vertical plane normal to the bow. The situation at the confluence of a blunt bow and the free surface is clarified first.
M. P. Tulin, G. Dagan
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Particle acceleration at planetary bow shock waves
Nature, 1982We can extend our understanding of collisionless shocks by comparing their behaviour in a variety of plasma conditions at several different planets. One property of such shocks is the occurrence of upstream magnetohydrodynamic waves associated with particle beams accelerated at these shocks, and flowing back towards the Sun1.
M. M. Hoppe, C. T. Russell
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BREAKING BOW AND STERN WAVES: NUMERICAL SIMULATIONS [PDF]
, 2001 Ship-generated waves have always fascinated scientists, and played a key role in surface-ship hydrodynamics for contributing to hull resistance, generating sounds and radiating very long narrow wakes remotely visible. Some of these phenomena originate abeam the ship through extensive breaking of diverging bow and stern waves, forming a wake.
M. Landrini, A. Colagrossi M. P. Tulin
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