Realization of high pressures and temperatures in the gas phase of a bubble liquid flowing through a nozzle

2007 ◽  
Vol 80 (6) ◽  
pp. 1206-1209 ◽  
Author(s):  
V. Sh. Shagapov ◽  
S. A. Lepikhin ◽  
M. N. Galimzyanov

Isotherms of Kr and Xe in chabazite have been obtained for absolute sorption and for Gibbs excess sorption, in the temperature range 150 to 450 °C and at pressures up to 100 atm. Thermodynamic equilibrium constants for distribution of gas between the crystals and the gas phase, standard state concentrations and heats of sorption have been determined. At the highest pressures differences between absolute sorption and Gibbs excess sorption were large. The change of equilibrium fugacity with temperature for given absolute and Gibbs excess sorptions yielded two differential heats of sorption and two differential entropies of the sorbate. These heats, and the corresponding entropies, differed numerically and in their dependence upon amount sorbed. The thermodynamic relationship between the two heats has been derived and discussed.


2006 ◽  
Vol 4 ◽  
pp. 83-89
Author(s):  
S.A. Lepikhin ◽  
M.N. Galimzyanov

The stationary flow of a bubble gas-liquid mixture in a nozzle of circular cross-section is considered. The possibility of realizing superhigh temperatures and pressures in the gas phase at the nozzle site near the minimum cross section is analyzed. The effect of the parameters (the initial radius and the volume content of bubbles that determine the composition of the volume flow of liquid fed into the nozzle) on the flow pattern is studied.


2007 ◽  
Vol 5 ◽  
pp. 267-272
Author(s):  
S.A. Lepikhin ◽  
M.N. Galimzyanov

In a quasi-one-dimensional formulation, the problem of the stationary flow of a bubble liquid in a nozzle of circular cross-section is considered. The influence of interphase mass exchange processes on the nature of nonlinear oscillations of bubbles and the high pressures and temperatures that arise in them developing in the expanding part of the nozzle near the minimum cross section is investigated.


2007 ◽  
Vol 5 ◽  
pp. 113-120 ◽  
Author(s):  
R.Kh. Bolotnova

The method of construction the wide-range equations of state for organic liquids, describing the gas and liquid phases including dissociation and ionization which occurs during an intense collapse of steam bubbles and accompanied by ultra-high pressures and temperatures, is proposed.


2020 ◽  
Author(s):  
Kenji Ohta ◽  
Kei Hirose

Abstract Precise determinations of the thermal conductivity of iron alloys at high pressures and temperatures are essential for understanding the thermal history and dynamics of the metallic cores of the Earth. We review relevant high-pressure experiments using a diamond-anvil cell and discuss implications of high core conductivity for its thermal and compositional evolution.


1987 ◽  
Vol 29 (8) ◽  
pp. 997-1004 ◽  
Author(s):  
V. A. Zharikov ◽  
I. P. Ivanov ◽  
B. I. Omel'yanenko ◽  
A. F. Red'kin ◽  
S. V. Yudintsev

2004 ◽  
Vol 70 (17) ◽  
Author(s):  
Shikai Xiang ◽  
Lingcang Cai ◽  
Fuqian Jing ◽  
Shunjin Wang

Sign in / Sign up

Export Citation Format

Share Document