scholarly journals On symmetry and anisotropy of Earth-core flows

2011 ◽  
Vol 38 (10) ◽  
pp. n/a-n/a ◽  
Author(s):  
N. Schaeffer ◽  
M. A. Pais
Keyword(s):  
Earth Core ◽  
Core Flows

Effect of freeze–thaw cycles on the deformation behavior of gravelly soil in the 300 m-high earth core rockfill dam

2021 ◽  
Vol 80 (8) ◽  
Author(s):  
Feng Ming ◽  
Xiu-Ling Ren ◽  
Jin-guo Wang ◽  
Zhi-wei Zhou ◽  
En-Long Liu ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Freeze Thaw ◽  
Earth Core ◽  
Rockfill Dam ◽  
Gravelly Soil ◽  
Core Rockfill Dam

Influence of core flows on the decade variations of the polar motion

1996 ◽  
Vol 82 (1-2) ◽  
pp. 35-67 ◽  
Author(s):  
G. Hulot ◽  
M. LE Huy ◽  
J.-L. LE MouëL
Keyword(s):  
Polar Motion ◽  
Core Flows

Measuring the melting curve of iron at super-Earth core conditions

Science ◽  
2022 ◽  
Vol 375 (6577) ◽  
pp. 202-205
Author(s):  
Richard G. Kraus ◽  
Russell J. Hemley ◽  
Suzanne J. Ali ◽  
Jonathan L. Belof ◽  
Lorin X. Benedict ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Inner Core ◽  
Melting Curve ◽  
Radiation Shielding ◽  
Metal Core ◽  
Earth Core ◽  
Core Boundary ◽  
Earth Like Planets ◽  
Earth’S Inner Core ◽  
Core Conditions

Terapascal iron-melting temperature The pressure and temperature conditions at which iron melts are important for terrestrial planets because they determine the size of the liquid metal core, an important factor for understanding the potential for generating a radiation-shielding magnetic field. Kraus et al . used laser-driven shock to determine the iron-melt curve up to a pressure of 1000 gigapascals (see the Perspective by Zhang and Lin). This value is about three times that of the Earth’s inner core boundary. The authors found that the liquid metal core lasted the longest for Earth-like planets four to six times larger in mass than the Earth. —BG

Dynamic simulation of the motion of capsules in pipelines

1995 ◽  
Vol 286 ◽  
pp. 201-227 ◽  
Author(s):  
J. Feng ◽  
P. Y. Huang ◽  
D. D. Joseph
Keyword(s):  
Lift Force ◽  
Two Dimensions ◽  
Inertial Forces ◽  
Stress Distributions ◽  
Three Stages ◽  
Heavy Crude ◽  
Lift Off ◽  
Experimental Values ◽  
Transient Oscillations ◽  
Core Flows

In this paper we report results of two-dimensional simulations of the motion of elliptic capsules carried by a Poiseuille flow in a channel. The numerical method allows computation of the capsule motion and the fluid flow around the capsule, and accurate evaluation of the lift force and torque. Results show that the motion of a capsule which is heavier than the carrying fluid may be decomposed into three stages: initial lift-off, transient oscillations and steady flying. The behaviour of the capsule during initial lift-off and steady flying is analysed by studying the pressure and shear stress distributions on the capsule. The dominant mechanism for the lift force and torque is lubrication or inertia or a combination of the two under different conditions. The lift-off velocity for the ellipse in two dimensions is compared with experimental values for cylindrical capsules in pipes. Finally, the mechanisms of lift for capsules are applied to flying core flows, and it is argued that inertial forces are responsible for levitating heavy crude oil cores lubricated by water in a horizontal pipeline.

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