Results 21 to 30 of about 468,934 (298)
On the vertical shear instability in magnetized protoplanetary discs [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT The vertical shear instability (VSI) is a robust phenomenon in irradiated protoplanetary discs (PPDs). While there is extensive literature on the VSI in the hydrodynamic limit, PPDs are expected to be magnetized and their extremely low ionization fractions imply that non-ideal magnetohydrodynamic effects should be properly ...
Can Cui, Min-Kai Lin
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Vertical instability and inclination excitation during planetary migration [PDF]
, 2014 We consider a two-planet system, which migrates under the influence of dissipative forces that mimic the effects of gas-driven (Type II) migration. It has been shown that, in the planar case, migration leads to resonant capture after an evolution that ...
Antoniadou, K. I. +2 more
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Investigation of the vertical instability at the Argonne Intense Pulsed Neutron Source
Physical Review Special Topics. Accelerators and Beams, 2009 The rapid cycling synchrotron of the intense pulsed neutron source at Argonne National Laboratory normally operates at an average beam current of 14 to 15 μA, accelerating protons from 50 to 450 MeV 30 times per second.
Shaoheng Wang +4 more
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Numerical study of instability mechanism in the air-core vortex formation process
Engineering Applications of Computational Fluid Mechanics, 2023 Air-core vortices are a ubiquitous phenomenon in the intakes of hydropower stations. Due to the transient and instability of two-phase vorticial flow, the prediction of air-core vortex formation is challenging, and understanding of the instability ...
Kan Kan +7 more
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Control of the vertical instability in tokamaks [PDF]
Nuclear Fusion, 1990 The problem of control of the vertical instability is studied for a massless filamentary plasma with finite resistivity included for the shell and active control coil. Stability boundaries are determined. The system can be stabilized up to a critical decay index, which is predominantly a function of the geometry of the passive stabilizing shell.
E.A. Lazarus, J.B. Lister, G.H. Neilson
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THE ROLE OF AIR ADVECTION AND ATMOSPHERIC STABILITY INDICES FOR IDENTIFING HEAVY RAIN STORMS IN NORTH-WESTERN ROMANIA [PDF]
Aerul şi Apa: Componente ale Mediului, 2015 Air advection and convection at different levels in the atmosphere affect its vertical stability. The degree of stability / instability can be determined by using vertical wind profile (hodograph) and stability indices. Analysis of these two elements was
TUDOSE T., MOLDOVAN F.
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Beam-beam Effect of Missing Bunches in EicC
Yuanzineng kexue jishu, 2022 EicC is a highly polarized electron-ion collider proposed by the Institute of Modern Physics, Chinese Academy of Sciences. The center of mass collision energy is between 15-20 GeV.
CHANG Mingxuan;YANG Jiancheng;WANG Lei;LIU Jie;SHEN Guodong;MA Fu;LI Minxiang
doaj
Baroclinic instability in the two-layer model: interpretations
Meteorologische Zeitschrift, 2009 Two new interpretations of the wellknown instability criterion of the two-layer model of baroclinic instability are given whereby also a slight generalization of this model is introduced by admitting an interface on top with a reduced gravity g.
Joseph Egger
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The Evolution of a Double Diffusive Magnetic Buoyancy Instability [PDF]
, 2010 Recently, Silvers, Vasil, Brummell, & Proctor (2009), using numerical simulations, confirmed the existence of a double diffusive magnetic buoyancy instability of a layer of horizontal magnetic field produced by the interaction of a shear velocity field ...
Brummell, Nicholas H. +3 more
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High resolution parameter study of the vertical shear instability [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT Theoretical models of protoplanetary discs have shown the vertical shear instability (VSI) to be a prime candidate to explain turbulence in the dead zone of the disc. However, simulations of the VSI have yet to show consistent levels of key disc turbulence parameters like the stress-to-pressure ratio α. We aim to reconcile these
Natascha Manger +3 more
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