Results 1 to 10 of about 1,689,762 (301)
Instability of Vertical Throughflows in Bidisperse Porous Media
Physics, 2021 In this paper, the instability of a vertical fluid motion, or throughflow, is investigated in a horizontal bidisperse porous layer that is uniformly heated from below.
Florinda Capone, Roberta De Luca
exaly +4 more sources
The coexistence of the streaming instability and the vertical shear instability in protoplanetary disks [PDF]
Astronomy & Astrophysics, 2020 The streaming instability is a leading candidate mechanism to explain the formation of planetesimals. However, the role of this instability in the driving of turbulence in protoplanetary disks, given its fundamental nature as a linear hydrodynamical instability, has so far not been investigated in detail.
Urs Schäfer +2 more
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Vertical spinal instability – Advanced neuromuscular therapy protocol
Interdisciplinary Neurosurgery, 2021 The term vertical spinal instability (VSI) was popularised by Atul Goel following his extensive research work in the field of spine disorders. Many spinal degenerative disc disease, have been treated by his innovative surgical techniques, based on this ...
K. Ragurajaprakash
doaj +1 more source
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.
Lazarus, E. A. +2 more
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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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Nuclear Fusion, 2023 Precise control of plasma shape parameters, such as elongation and triangularity is duly needed to achieve high-performance tokamak plasmas, for which we propose adaptive search schemes of (1) optimum regularization parameter for the Tikhonov ...
S. Inoue +4 more
doaj +1 more source
Managing the Risk of Wellbore Instability Using Geomechanical Modeling and Wellbore Stability Analysis for Muzhil Shale Formation in Gulf of Suez, Egypt [PDF]
JES: Journal of Engineering Sciences, 2023 Wellbore instability constitutes potential risks during wellbore drilling operation; these risks may cause complicated states, and in some cases, can lead to costly operational issues.
Ahmed Mohamed +3 more
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Vertical Shear Instability in the Solar Nebula [PDF]
Proceedings of the International Astronomical Union, 2015 AbstractWe quantify the thermodynamic requirement for the Vertical Shear Instability and evaluate its relevance to realistic protoplanetary disks as a potential route to hydrodynamic turbulence.
Lin, Min-Kai, Youdin, Andrew N.
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Removing spurious inertial instability signals from gravity wave temperature perturbations using spectral filtering methods [PDF]
Atmospheric Measurement Techniques, 2020 Gravity waves are important drivers of dynamic processes in particular in the middle atmosphere. To analyse atmospheric data for gravity wave signals, it is essential to separate gravity wave perturbations from atmospheric variability due to other ...
C. Strube, M. Ern, P. Preusse, M. Riese
doaj +1 more source
Advances in Civil Engineering, 2022 In civil engineering, arches, such as steel arch roofs and arch bridges, are often subjected to linear temperature gradient field. It is known that the in-plane instability of parabolic arches is caused by the significant axial force.
Zhenyu Pan +6 more
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