Results 11 to 20 of about 1,689,762 (301)
Astronomy & AstrophysicsThe vertical shear instability and the streaming instability are two robust sources of turbulence in protoplanetary disks. The former has been found to induce anisotropic turbulence that is stronger in the vertical than in the radial dimension and to be overall stronger compared to the largely isotropic turbulence caused by the streaming instability ...
Urs Schäfer +2 more
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On the vertical-shear instability in astrophysical discs [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We explore the linear stability of astrophysical discs exhibiting vertical shear, which arises when there is a radial variation in the temperature or entropy. Such discs are subject to a "vertical-shear instability", which recent nonlinear simulations have shown to drive hydrodynamic activity in the MRI-stable regions of protoplanetary discs.
Barker, AJ, Latter, HN
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Baroclinic instability with a simple model for vertical mixing Baroclinic instability with a simple model for vertical mixing [PDF]
, 2019 Here, we examine baroclinic instability in the presence of vertical mixing in an idealized setting. Specifically, we use a simple model for vertical mixing of momentum and buoyancy and expand the buoyancy and vorticity in a series for small Rossby numbers.
Crowe, Matthew N, Taylor, John R
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Global Rather Than Vertical-Selective Saccadic Abnormalities in Progressive Supranuclear Palsy. [PDF]
Ann Clin Transl NeurolABSTRACT Objective To test whether vertical saccades are preferentially affected in Progressive Supranuclear Palsy (PSP). Methods PSP patients (n = 24) were compared to age‐matched controls (n = 94) and two degenerative groups (Alzheimer's disease, n = 20; Lewy body disease, n = 50).
Nguyen DD +6 more
europepmc +2 more sources
The coexistence of the streaming instability and the vertical shear instability in protoplanetary disks: Scale-dependence of dust diffusion [PDF]
The vertical shear instability and the streaming instability are two robust sources of turbulence in protoplanetary disks. The former has been found to induce anisotropic turbulence that is stronger in the vertical than in the radial dimension and to be ...
Flock, Mario +2 more
core +6 more sources
Numerical Simulation of the Instability of a Non-Isothermal Liquid Film in Film Devices [PDF]
MATEC Web of Conferences, 2021 This work presents results of numerical simulation of the instability of vertical liquid film flow at moderate Reynolds numbers in the framework of partial differential equation of the state of the free surface of the liquid film.
Prokudina L.A., Vikhirev M.P.
doaj +1 more source
Vertical instability at IPNS RCS [PDF]
2007 IEEE Particle Accelerator Conference (PAC), 2007 The rapid cycling synchrotron (RCS) of the intense pulsed neutron source (IPNS) at ANL accelerates > 3.0 times 1012 protons from 50 MeV to 450 MeV with 30-Hz repetition frequency. During the acceleration cycle, the rf frequency varies from 2.21 MHz to 5.14 MHz. Presently, the beam current is limited by a vertical instability.
S. Wang +7 more
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Journal of Craniovertebral Junction and Spine, 2021 Purpose: Rheumatoid arthritis (RA) affecting the cervical spine results in instability and deformity that can be divided into the subtypes C1–C2 horizontal (atlantoaxial instability), C0–C2 vertical (basilar invagination), subaxial, and combined ...
Anna MacDowall +2 more
doaj +1 more source
Arthroscopy Techniques, 2020 Injuries to the acromioclavicular (AC) joint are common and comprise ∼12% of shoulder injuries. Stability to the AC joint depends on the coracoclavicular (CC) ligaments for vertical stability and AC ligaments and capsular structures for horizontal ...
Gianna M. Aliberti, BA +3 more
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Bending and twisting instabilities of columnar elliptical vortices in a rotating strongly stratified fluid [PDF]
, 2006 This is a comprehensive analysis of the linear stability of columnar elliptical vortices subject to two-dimensional strain in a rotating, stratified fluid. It is the culmination of two lines of research, one started by Dritschel involving the tall-column
Dritschel, D.G. +4 more
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