Wall effects in a diamond‐anvil pressure‐cell falling‐sphere viscometer

1979 ◽  
Vol 50 (5) ◽  
pp. 3180-3184 ◽  
Author(s):  
R. G. Munro ◽  
G. J. Piermarini ◽  
S. Block
Keyword(s):  
Wall Effects ◽  
Pressure Cell ◽  
Falling Sphere ◽  
Diamond Anvil

Wall Effects On the Flow Dynamics of a Rigid Sphere in Motion

2021 ◽  
Author(s):  
Zhi-gang Feng ◽  
Jason Gatewood ◽  
E.E. Michaelides
Keyword(s):  
Hydrodynamic Force ◽  
Rotational Velocity ◽  
Analytical Data ◽  
Particle Diameter ◽  
Immersed Boundary ◽  
Rigid Sphere ◽  
Wall Effects ◽  
Falling Sphere ◽  
Dimensionless Ratio ◽  
Free Falling

Abstract The presence of a wall near a rigid sphere in motion is known to disturb the particle fore and aft flow field symmetry and to affect the hydrodynamic force. An Immersed Boundary Direct Numerical Simulation (IB-DNS) is used in this study to determine the wall effects on the dynamics of a free-falling sphere and the drag of a sphere moving at a constant velocity. The numerical results are validated by comparison to the published experimental, numerical, and analytical data. The pressure and velocity fields are numerically computed when the particle is in the vicinity of the wall; the transverse (lift) and longitudinal (drag) parts of the hydrodynamic force are calculated; its rotational velocity is also investigated in the case of a free-falling sphere. The flow asymmetry also causes the particle to rotate. The wall effect is shown to be significant when the dimensionless ratio of the wall distance to the particle diameter, L/D, is less than 3. The wall effects are more pronounced and when the particle Reynolds number, Re, is less than 10. Based on the computational results, a useful correlation for the wall effects on the drag coefficients spheres is derived in the range 0.75 < L/D < 3 and 0.18 < Re < 10.

Diamond Anvil Pressure Cell and Pressure Sensor for High-Temperature Use

1982 ◽  
Vol 21 (Part 1, No. 11) ◽  
pp. 1647-1649 ◽  
Author(s):  
Haruo Arashi ◽  
Mareo Ishigame
Keyword(s):  
High Temperature ◽  
Pressure Sensor ◽  
Pressure Cell ◽  
Diamond Anvil

Graphite-to-diamond (13C) direct transition in a diamond anvil high-pressure cell

2016 ◽  
Vol 13 (8/9) ◽  
pp. 604 ◽  
Author(s):  
V.D. Blank ◽  
B.A. Kulnitskiy ◽  
I.A. Perezhogin ◽  
E.V. Tyukalova ◽  
V.N. Denisov ◽  
...  
Keyword(s):  
High Pressure ◽  
Direct Transition ◽  
High Pressure Cell ◽  
Pressure Cell ◽  
Diamond Anvil

Absorption corrections for diamond-anvil pressure cells implemented in the software packageAbsorb6.0

2004 ◽  
Vol 37 (3) ◽  
pp. 486-492 ◽  
Author(s):  
R. J. Angel
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Software Package ◽  
Structure Refinement ◽  
Intensity Data ◽  
Crystal Structure Refinement ◽  
Pressure Cell ◽  
Transmission Geometry ◽  
Diamond Anvil ◽  
Microsoft Windows

High-pressure single-crystal structure refinement requires intensity data that have been corrected for the various absorption effects in the pressure cell. In this contribution, the methods for calculating the absorption corrections for a transmission-geometry diamond-anvil pressure cell are reviewed. The ideas presented in this paper have been implemented in a software package for Microsoft Windows,Absorb6.0, available at http://www.crystal.vt.edu/.

Hall effect measurement in the diamond anvil high‐pressure cell

1986 ◽  
Vol 57 (11) ◽  
pp. 2795-2797 ◽  
Author(s):  
Dinesh Patel ◽  
Todd E. Crumbaker ◽  
James R. Sites ◽  
Ian L. Spain
Keyword(s):  
High Pressure ◽  
Hall Effect ◽  
Hall Effect Measurement ◽  
Effect Measurement ◽  
High Pressure Cell ◽  
Pressure Cell ◽  
Diamond Anvil

Generation of static pressures above 2.5 megabars in a diamond‐anvil pressure cell

1985 ◽  
Vol 56 (7) ◽  
pp. 1420-1427 ◽  
Author(s):  
Kenneth A. Goettel ◽  
Ho‐kwang Mao ◽  
Peter M. Bell
Keyword(s):  
Pressure Cell ◽  
Diamond Anvil
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