Generation of very high pressure pulses with 1-bit time reversal in a solid waveguide

2001 ◽  
Vol 110 (6) ◽  
pp. 2849-2857 ◽  
Author(s):  
Gabriel Montaldo ◽  
Phillippe Roux ◽  
Arnaud Derode ◽  
Carlos Negreira ◽  
Mathias Fink
Keyword(s):  
High Pressure ◽  
Time Reversal ◽  
Pressure Pulses ◽  
Very High

Discussion of Issues Related to Surge in LNG Pipelines at Offloading Terminals

2008 ◽  
Author(s):  
Sean McGuffie
Keyword(s):  
High Pressure ◽  
Vapor Pressure ◽  
Peak Pressure ◽  
Plant Operation ◽  
Pressure Pulses ◽  
Very High

Due to requirements of LNG unloading terminals, the pipelines used to transport the liquid operate near the vapor pressure of the LNG. If the operational pressure in the pipeline falls below the vapor pressure, pockets of gas will develop; when these pockets collapse, very high pressure pulses can be transmitted through the pipeline, an event known as surge or waterhammer. This paper discusses transients that occur during normal and upset plant operation and how these transients can induce surge in the pipeline. The paper concludes with an overview of the methods used to evaluate whether surge will occur and the peak pressure associated with surge events, with an overview of cases that are typical candidates for analysis.

Generation of very high pressure pulses at the surface of a sandwiched piezoelectric material

Ultrasonics ◽  
2000 ◽  
Vol 38 (10) ◽  
pp. 965-968 ◽  
Author(s):  
J.P Sferruzza ◽  
A Birer ◽  
D Cathignol
Keyword(s):  
High Pressure ◽  
Piezoelectric Material ◽  
Pressure Pulses ◽  
Very High

Generation of very high‐pressure pulse using time reversal in a solid waveguide: Application to lithotripsy

2001 ◽  
Vol 109 (5) ◽  
pp. 2481-2482 ◽  
Author(s):  
Gabriel Montaldo ◽  
Philippe Roux ◽  
Arnaud Derode ◽  
Mathias Fink ◽  
Carlos Neigreira
Keyword(s):  
High Pressure ◽  
Time Reversal ◽  
Pressure Pulse ◽  
Very High

Anion packing density: a universal quantity for both dense and porous crystalline inorganic phases

2002 ◽  
Vol 58 (3) ◽  
pp. 457-462 ◽  
Author(s):  
F. Liebau ◽  
H. Küppers
Keyword(s):  
High Pressure ◽  
Packing Density ◽  
Three Dimensional ◽  
Ionic Radii ◽  
Generalized Framework ◽  
Molal Volumes ◽  
Definition Of ◽  
Anion Packing ◽  
Very High ◽  
Framework Density

To compare densities of inorganic high-pressure phases their molal volumes or specific gravities are usually employed, whereas for zeolites and other microporous materials the so-called framework density, FD, is applied. The definition of FD, which refers only to phases with three-dimensional tetrahedron frameworks, is extended to a `generalized framework density' d f, which is independent of the dimensionality of the framework and the coordination number(s) of the framework cations. In this paper the anion packing density, d ap, is introduced as a new quantity which is not only applicable to any inorganic phase but, in contrast to FD and d f, also allows quantitative comparisons to be made for crystalline inorganic phases of any kind. The anion packing density can readily be calculated if the volume and content of the unit cell and the radii of the anions of a phase are known. From d ap values calculated for high-pressure silica polymorphs studied under very high pressure, it is concluded that Shannon–Prewitt effective ionic radii do not sufficiently take into account the compressibility of the anions.

scholarly journals Gaseous combustion at high pressures. —Part X. The co-volume corrections, maximum temperatures and dissociation of steam and carbon dioxide in explosions

1928 ◽  
Vol 119 (782) ◽  
pp. 464-480
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Internal Energy ◽  
High Temperatures ◽  
High Pressures ◽  
Internal Combustion ◽  
Systematic Survey ◽  
Explosion Method ◽  
Maximum Temperatures ◽  
Very High

During the researches upon high-pressure explosions of carbonic oxide-air, hydrogen-air, etc., mixtures, which have been described in the previous papers of this series, a mass of data has been accumulated relating to the influence of density and temperature upon the internal energy of gases and the dissociation of steam and carbon dioxide. Some time ago, at Prof. Bone’s request, the author undertook a systematic survey of the data in question, and the present paper summarises some of the principal results thereof, which it is hoped will throw light upon problems interesting alike to chemists, physicists and internal-combustion engineers. The explosion method affords the only means known at present of determining the internal energies of gases at very high temperatures, and it has been used for this purpose for upwards of 50 years. Although by no means without difficulties, arising from uncertainties of some of the assumptions upon which it is based, yet, for want of a better, its results have been generally accepted as being at least provisionally valuable. Amongst the more recent investigations which have attracted attention in this connection should be mentioned those of Pier, Bjerrum, Siegel and Fenning, all of whom worked at low or medium pressures.

scholarly journals Germination of vegetable seeds exposed to very high pressure

2012 ◽  
Vol 377 ◽  
pp. 012055 ◽  
Author(s):  
Y Mori ◽  
S Yokota ◽  
F Ono
Keyword(s):  
High Pressure ◽  
Very High

Very-High-Pressure Burning Rates of Aluminized and Nonaluminized AP/HTPB-Composite Propellants

2021 ◽  
pp. 1-8
Author(s):  
Catherine A. M. Dillier ◽  
Erica D. Petersen ◽  
Thomas Sammet ◽  
Eric L. Petersen
Keyword(s):  
High Pressure ◽  
Burning Rates ◽  
Very High
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