Theoretical Determination of Absorption With an Emphasis on High Temperatures and a Specific Application to Carbon Monoxide

1973 ◽  
Vol 95 (4) ◽  
pp. 535-538 ◽  
Author(s):  
J. C. Lin ◽  
R. Greif
Keyword(s):  
Carbon Monoxide ◽  
High Temperatures ◽  
Rotational Band ◽  
Experimental Results ◽  
Theoretical Determination ◽  
Hot Band ◽  
Good Agreement

The absorption of a vibrational-rotational band has been studied and the contribution from the first hot band has been included. A specific application has been made to carbon monoxide and good agreement with experimental results has been obtained.

Theoretical Determination of Band Absorption With Specific Application to Carbon Monoxide and Nitric Oxide

1976 ◽  
Vol 98 (3) ◽  
pp. 432-437 ◽  
Author(s):  
A. Hashemi ◽  
T. C. Hsieh ◽  
R. Greif
Keyword(s):  
Nitric Oxide ◽  
Experimental Data ◽  
Carbon Monoxide ◽  
Infrared Absorption ◽  
Theoretical Determination ◽  
Variable Line ◽  
Line Spacing ◽  
Band Absorption ◽  
Good Agreement

Results are derived for infrared absorption in a fundamental manner directly from the basic spectroscopic variables. Comparison with the experimental data for carbon monoxide and nitric oxide shows very good agreement. Further work is suggested which includes the effect of variable line spacing.

Determination of the limits of stable combustion at high supersonic flow velocities in a channel

2010 ◽  
Vol 3 (2) ◽  
pp. 47-60
Author(s):  
Alexey V. Starov
Keyword(s):  
Paper Analysis ◽  
Measurement Methods ◽  
Experimental Results ◽  
Physical Parameters ◽  
Supersonic Speed ◽  
Combustion Limits ◽  
Criterial Description ◽  
Selection Of ◽  
Good Agreement

In this paper, analysis of existing methods application of criterial description of ignition conditions and combustion break-out for summarizing of experimental results is carried out. Experimental results are obtained at investigations of hydrogen combustion in combustor with high supersonic speed of airflow. For these conditions selection of several criterions was substantiated and they have a good agreement with new experimental results. At the same time complexity of determination of experimental physical parameters, which are included in criterions, do not allow confidently to apply them for prediction of steady-state combustion limits. Therefore further accumulation of experimental data and development of measurement methods are necessary for accurate criterions obtaining.

Measurement of the Isothermal Volume Dilation Accompanying the Unilateral Extension of Rubber

1959 ◽  
Vol 32 (2) ◽  
pp. 428-433
Author(s):  
Fred G. Hewitt ◽  
Robert L. Anthony
Keyword(s):  
Molecular Weight ◽  
Young’S Modulus ◽  
Experimental Results ◽  
Molecular Weights ◽  
Rubber Specimen ◽  
A Value ◽  
Fractional Increase ◽  
Internal Agreement ◽  
Good Agreement

Abstract The fractional increase in volume accompanying the isothermal extension of soft gum rubber was measured for four rubber samples at mean extensions of 14, 33, and 51%. The chain molecular weights Mc of the four samples were 5500, 5100, 4400, and 3000, with an estimated uncertainty of about 10% in each value of Mc. The observed fractional increase in volume ranged from 3.2×10−5 to 142×10−5, the latter value being observed for the sample of lowest chain molecular weight and at the extension of 51%. The experimental results for each sample have been represented by theoretical curves based on Gee's expression for the fractional increase in volume as a function of the sample extension. The theoretical curves exhibit good agreement with those of Gee, Stern, and Treloar. The process of fitting the theoretical curves to the experimental points constituted a determination of Young's modulus E for each rubber specimen. As a check on the experimental results, and also on the theory employed, determinations of E were also made by two additional methods, namely, from rough stess-strain curves, and from the relation E=3γρRT/Mc. With one exception, the internal agreement between the three determinations of E for the four different samples was satisfactory. The exception noted can probably be ascribed to the use of too small a value of Mc for the sample of lowest chain molecular weight.

Explicit formulation for the axial collapse of a pipe during drilling

2010 ◽  
Vol 224 (8) ◽  
pp. 1547-1549
Author(s):  
A Almasi
Keyword(s):  
Closed Form ◽  
Plastic Hinge ◽  
Variable Length ◽  
Experimental Results ◽  
Displacement Curve ◽  
Explicit Formulation ◽  
Theoretical Predictions ◽  
Hinge Zone ◽  
Good Agreement

New closed-form expressions are introduced for ax-symmetric progressive axial collapse of pipes that use a plastic folding mechanism based on variable length of an active plastic hinge zone. A procedure for determination of a load—displacement curve of axial pipe collapse is presented. Theoretical predictions give a good agreement with the experimental results owing to the influence of presented new refinements.

scholarly journals Agreements and Disagreements between Theories of Rigid Earth Nutation

1997 ◽  
Vol 165 ◽  
pp. 319-324
Author(s):  
J. Souchay
Keyword(s):  
Very Long Baseline Interferometry ◽  
Laser Ranging ◽  
Lunar Laser Ranging ◽  
Theoretical Determination ◽  
Long Baseline ◽  
The Earth ◽  
Lunar Laser ◽  
Rigid Earth ◽  
Good Agreement

AbstractThe necessity to elaborate a theory of nutation and precession matching the accuracy of very modern techniques as Very Long Baseline Interferometry and Lunar Laser Ranging led recently to various works. We discuss here the good agreement between those related to the nutation when considering the Earth as a solid body. In comparison we show the uncertainty concerning the modelisation of the transfer function leading to theoretical determination of the nutation coefficients when including dominant geophysical characteristics.

scholarly journals Use of the corrected plane wave model for the determination of the reflection coefficient during horizontal plate swell interaction

2019 ◽  
Vol 286 ◽  
pp. 09001
Author(s):  
M. Amimi ◽  
S. Naasse ◽  
C. Chahine
Keyword(s):  
Reflection Coefficient ◽  
Plane Wave ◽  
Relative Length ◽  
Wave Model ◽  
Experimental Results ◽  
Regular Wave ◽  
Horizontal Plate ◽  
Submerged Horizontal Plate ◽  
Good Agreement

The main objective of this work, is to calculate variations of the reflection coefficient of the regular wave by a submerged horizontal plate, using the corrected plane wave model, by choosing appropriately the immersion and the relative length of the plate. It is shown that with this correction the reflection coefficient has a good agreement with the experimental results (Brossard et al., Liu C.R).

Nuclear Magnetic Resonance Investigations in Liquid In-Ni Alloys

1984 ◽  
Vol 39 (2) ◽  
pp. 203-204 ◽  
Author(s):  
I. Senel ◽  
D. Ploumbidis
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Exchange Interaction ◽  
High Temperatures ◽  
Knight Shift ◽  
Hyperfine Interactions ◽  
Experimental Results ◽  
Ni Alloys ◽  
Good Agreement ◽  
Nuclear Magnetic

Measurements of the 115In Knight shift and the NMR linewidth in liquid In-Ni have been carried out over the concentration range (0-50) at.% Ni at high temperatures. With changes of the Ni concentration important changes occur in the hyperfine interactions referring to 115In. The experimental results for higher Ni concentrations are in good agreement with a model involving a significant d-d exchange interaction.

The Determination of Forced-Convection Surface-Boiling Heat Transfer

1964 ◽  
Vol 86 (3) ◽  
pp. 365-372 ◽  
Author(s):  
A. E. Bergles ◽  
W. M. Rohsenow
Keyword(s):  
Heat Transfer ◽  
Forced Convection ◽  
Boiling Heat Transfer ◽  
Pool Boiling ◽  
Experimental Results ◽  
Boiling Curve ◽  
Wall Superheat ◽  
Good Agreement

The characteristics of the boiling curve for forced-convection surface boiling are examined in detail. In the region of low wall superheat, the heat transfer can be predicted by available correlations for forced convection. An analysis is presented for the inception of first significant boiling. Experimental results are in good agreement with analytical predictions. Pool-boiling data were taken under saturated and subcooled conditions for surfaces similar to those used in forced-convection surface boiling. These data indicate that the curves for forced-convection surface boiling cannot be based on data for saturated pool boiling but must rather be based on actual forced-convection data.

scholarly journals The determination of the specific heat of gases at high temperatures by the sound velocity method I―Carbon monoxide

1934 ◽  
Vol 147 (861) ◽  
pp. 292-308 ◽  
Keyword(s):  
Carbon Monoxide ◽  
Specific Heat ◽  
Sound Velocity ◽  
High Temperatures ◽  
Transient Phenomena ◽  
Radiation Correction ◽  
Specific Heats ◽  
Explosion Method

The determination of the specific heats of gases at high temperatures is a problem of unusual difficulty and the attempts hitherto made to measure specific heats at temperatures exceeding 1200° C have been by the "explosion method." This method involves the observation of transient phenomena and also the estimation of a relatively large radiation correction.

Experimental Determination of Friction Factors for Straight and Curved Microchannels

2010 ◽  
Vol 5 (3) ◽  
pp. 63-70
Author(s):  
Vladimir М. Aniskin ◽  
Kseniya V. Adamenko ◽  
Anatoliy A. Maslov
Keyword(s):  
Friction Factor ◽  
Software Package ◽  
Reference Value ◽  
Reynolds Numbers ◽  
Experimental Results ◽  
Friction Factors ◽  
Inner Diameter ◽  
Curved Section ◽  
Good Agreement

This article presents experimental results of determining the friction factors for two microchannels with circular crosssection: rectilinear and curvilinear. The inner diameter of channels in both cases was 100 microns. The Reynolds numbers ranged from 110 to 2216. Pressure measurement was carried out simultaneously in four locations along the channel. Friction factor for the straight microchannel was in good agreement with the theoretical value for the round smooth tubes. For the curved microchannel, the value of friction factor of the curved section was 17 percent less than the reference value for smoothly curved tubes. The experimental results are compared with calculations which were made using the software package Fluent

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