SPECIFIC HEAT AND SPEED OF SOUND DATA FOR IMPERFECT AIR

1964 ◽  
Author(s):  
Clark H. Lewis ◽  
Charles A. Neel
Keyword(s):  
Specific Heat ◽  
Speed Of Sound ◽  
Sound Data

A Study of Fluid Argon via the Constant Volume Specific Heat, the Isothermal Compressibility, and the Speed of Sound and their Extremum Properties along Isotherms

1975 ◽  
Vol 53 (14) ◽  
pp. 1367-1384 ◽  
Author(s):  
John Stephenson
Keyword(s):  
Equation Of State ◽  
Specific Heat ◽  
Speed Of Sound ◽  
Isothermal Compressibility ◽  
Constant Volume ◽  
Liquid Region ◽  
Fluid Argon ◽  
Unified Description ◽  
Dense Liquid ◽  
Sound Data

The properties of fluid argon are investigated via the maxima and minima along isotherms of selected thermodynamic functions, the isothermal compressibility, χT, the constant volume specific heat, CV, and the speed of sound, W. Calculations are based on an equation of state due to Gosman, McCarty, and Hust and on speed of sound data compiled by Thoen, Vangeel, and Van Dael. The calculation of CV in the dense liquid region, from the equation of state and from the speed of sound, is discussed in detail. Also, the linear dependence of W on the density in the liquid region is reconciled with the behaviour of W at temperatures above critical to obtain a unified description of the variation of W along isotherms.

scholarly journals Thermodynamic Speed of Sound Data for Liquid and Supercritical Alcohols

2019 ◽  
Vol 64 (3) ◽  
pp. 1035-1044 ◽  
Author(s):  
Muhammad Ali Javed ◽  
Elmar Baumhögger ◽  
Jadran Vrabec
Keyword(s):  
Speed Of Sound ◽  
Sound Data

Thermodynamics of (ketone+amine) mixtures. Part VI. Volumetric and speed of sound data at (293.15, 298.15, and 303.15)K for (2-heptanone+dipropylamine, +dibutylamine, or +triethylamine) systems

2011 ◽  
Vol 43 (10) ◽  
pp. 1506-1514 ◽  
Author(s):  
Juan Antonio González ◽  
Iván Alonso ◽  
Ismael Mozo ◽  
Isaías García de la Fuente ◽  
José Carlos Cobos
Keyword(s):  
Speed Of Sound ◽  
Sound Data

Thermodynamics of Mixtures Containing Amines. XII. Volumetric and Speed of Sound Data at (293.15, 298.15, and 303.15) K for N-Methylaniline + Hydrocarbon Systems

2013 ◽  
Vol 58 (6) ◽  
pp. 1697-1705 ◽  
Author(s):  
Iván Alonso ◽  
Isaías García de la Fuente ◽  
Juan Antonio González ◽  
José Carlos Cobos
Keyword(s):  
Speed Of Sound ◽  
Thermodynamics Of Mixtures ◽  
Sound Data

Equation of State andP−V−T−xProperties of Refrigerant Mixtures Based on Speed of Sound Data

2003 ◽  
Vol 42 (16) ◽  
pp. 3802-3808 ◽  
Author(s):  
Mohammad Mehdi Papari ◽  
Ahmad Razavizadeh ◽  
Fathollah Mokhberi ◽  
Ali Boushehri
Keyword(s):  
Equation Of State ◽  
Speed Of Sound ◽  
Refrigerant Mixtures ◽  
Sound Data

scholarly journals On the Consideration of Diffusive Fluxes Within High-Pressure Injections

2020 ◽  
pp. 195-208
Author(s):  
Fabian Föll ◽  
Valerie Gerber ◽  
Claus-Dieter Munz ◽  
Berhand Weigand ◽  
Grazia Lamanna
Keyword(s):  
Experimental Data ◽  
High Pressure ◽  
Significant Influence ◽  
Speed Of Sound ◽  
Mixing Model ◽  
Mixing Models ◽  
Relative Importance ◽  
Submerged Jets ◽  
Diffusive Fluxes ◽  
Sound Data

Abstract Mixing characteristics of supercritical injection studies were analyzed with regard to the necessity to include diffusive fluxes. Therefore, speed of sound data from mixing jets were investigated using an adiabatic mixing model and compared to an analytic solution. In this work, we show that the generalized application of the adiabatic mixing model may become inappropriate for subsonic submerged jets at high-pressure conditions. Two cases are discussed where thermal and concentration driven fluxes are seen to have significant influence. To which extent the adiabatic mixing model is valid depends on the relative importance of local diffusive fluxes, namely Fourier, Fick and Dufour diffusion. This is inter alia influenced by different time and length scales. The experimental data from a high-pressure n-hexane/nitrogen jet injection were investigated numerically. Finally, based on recent numerical findings, the plausibility of different thermodynamic mixing models for binary mixtures under high pressure conditions is analyzed.

FALSIFICATIONS OF POISSON ADIABATE, HUGONIO ADIABATE, LAPLACE SOUND SPEEDS. MODERNIZATION OF FOUNDATIONS OF THERMODYNAMICS

2020 ◽  
Vol 5 (333) ◽  
pp. 58-67
Author(s):  
K.B. Jakupov ◽  
Keyword(s):  
Shock Wave ◽  
Heat Capacity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Speed Of Sound ◽  
Constant Pressure ◽  
Energy Balance Equation ◽  
Ideal Gas ◽  
Constant Volume ◽  
Capacity Coefficient

The inequality of the universal gas constant of the difference in the heat capacity of a gas at constant pressure with the heat capacity of a gas at a constant volume is proved. The falsifications of using the heat capacity of a gas at constant pressure, false enthalpy, Poisson adiabat, Laplace sound speed, Hugoniot adiabat, based on the use of the false equality of the universal gas constant difference in the heat capacity of a gas at constant pressure with the heat capacity of a gas at a constant volume, have been established. The dependence of pressure on temperature in an adiabatic gas with heat capacity at constant volume has been established. On the basis of the heat capacity of a gas at a constant volume, new formulas are derived: the adiabats of an ideal gas, the speed of sound, and the adiabats on a shock wave. The variability of pressure in the field of gravity is proved and it is indicated that the use of the specific coefficient of ideal gas at constant pressure in gas-dynamic formulas is pointless. It is shown that the false “basic formula of thermodynamics” implies the falseness of the equation with the specific heat capacity at constant pressure. New formulas are given for the adiabat of an ideal gas, adiabat on a shock wave, and the speed of sound, which, in principle, do not contain the coefficient of the specific heat capacity of a gas at constant pressure. It is shown that the well-known equation of heat conductivity with the gas heat capacity coefficient at constant pressure contradicts the basic energy balance equation with the gas heat capacity coefficient at constant volume.

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