Topic
Total pressure
About: Total pressure is a research topic. Over the lifetime, 5199 publications have been published within this topic receiving 66658 citations.
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TL;DR: In this article, void fraction and friction pressure drop measurements were made for vertical two-phase flow of air-water across staggered and in-line rod bundles with different pitch-to-diameter ratios.
Abstract: This paper reports on void fraction and friction pressure drop measurements made for vertical two-phase flow of air-water across staggered and in-line rod bundles with different pitch-to-diameter ratios. All void fraction data showed a strong mass velocity effect and were significantly less than the values predicted by a homogeneous flow model, but were well correlated using the dimensionless gas velocity, j[sup [asterisk]][sub g]. The two-phase friction multiplier data could be well correlated with the Martinelli parameter for G [gt] 200 kg/m[sup 2]s. The correlations developed for void fraction and two-phase friction multiplier were successfully tested in predicting the total pressure drop in boiling R-113 experiments.
66 citations
TL;DR: In this paper, the gas−liquid solubility of hydrogen in methanol, ethanol, 1-propanol, and 1-butanol at pressures in the range 3.6 to 10 MPa and at temperatures of 298.15 to 525.15 K has been measured in an autoclave type phase equilibrium apparatus using the total pressure method.
Abstract: The gas−liquid solubility of hydrogen in methanol, ethanol, 1-propanol, and 1-butanol at pressures in the range 3.6 to 10 MPa and at temperatures in the range 298.15 to 525.15 K has been measured in an autoclave type phase equilibrium apparatus using the total pressure method. Pseudo-Henry's law constants, , were calculated. The solubility of hydrogen increases with increasing temperature and pressure for all solvents used, and it also increases as the carbon chain length of the alcohol molecule increases.
66 citations
TL;DR: In this paper, the Kolosov-Muskhelishvili equations for the incompressible viscous flow problem in and around elliptical inclusions were used to study the effect of the orientation of the elliptical heterogeneity with respect to the far-field stresses.
66 citations
TL;DR: In this article, a mathematical model was developed to predict tar and extractables yields from rapid pyrolysis of softening coals, and the model accounts for intraparticle transport and secondary reactions of liquids generated by coal pyrotelysis, and satisfyingly captures important features of the current experimental data.
66 citations
Patent•
11 Dec 1989TL;DR: In this paper, a combination air data probe performs a number of different pressure measurements from a single structure, which renders these measurements substantially insensitive to aircraft angle of attack (AOA).
Abstract: A combination air data probe performs a number of different pressure measurements from a single structure Measurements of total pressure and total temperature are performed in an improved structural configuration which renders these measurements substantially insensitive to aircraft angle of attack Static temperature is computed free of recovery factor error because of compensatory effects in the pressure and temperature signals Another part of the probe provides measurement of static pressure and pressures for determining angle of attack
65 citations