Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722121914
Category :
Languages : en
Pages : 28
Book Description
The computer codes developed here provide self-consistent thermodynamic and transport properties for equilibrium air for temperatures from 500 to 30000 K over a temperature range of 10 (exp -4) to 10 (exp -2) atm. These properties are computed through the use of temperature dependent curve fits for discrete values of pressure. Interpolation is employed for intermediate values of pressure. The curve fits are based on mixture values calculated from an 11-species air model. Individual species properties used in the mixture relations are obtained from a recent study by the present authors. A review and discussion of the sources and accuracy of the curve fitted data used herein are given in NASA RP 1260. Thompson, Richard A. and Lee, Kam-Pui and Gupta, Roop N. Langley Research Center RTOP 506-40-91-01...
Computer Codes for the Evaluation of Thermodynamic and Transport Properties for Equilibrium Air to 30000 K
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722121914
Category :
Languages : en
Pages : 28
Book Description
The computer codes developed here provide self-consistent thermodynamic and transport properties for equilibrium air for temperatures from 500 to 30000 K over a temperature range of 10 (exp -4) to 10 (exp -2) atm. These properties are computed through the use of temperature dependent curve fits for discrete values of pressure. Interpolation is employed for intermediate values of pressure. The curve fits are based on mixture values calculated from an 11-species air model. Individual species properties used in the mixture relations are obtained from a recent study by the present authors. A review and discussion of the sources and accuracy of the curve fitted data used herein are given in NASA RP 1260. Thompson, Richard A. and Lee, Kam-Pui and Gupta, Roop N. Langley Research Center RTOP 506-40-91-01...
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722121914
Category :
Languages : en
Pages : 28
Book Description
The computer codes developed here provide self-consistent thermodynamic and transport properties for equilibrium air for temperatures from 500 to 30000 K over a temperature range of 10 (exp -4) to 10 (exp -2) atm. These properties are computed through the use of temperature dependent curve fits for discrete values of pressure. Interpolation is employed for intermediate values of pressure. The curve fits are based on mixture values calculated from an 11-species air model. Individual species properties used in the mixture relations are obtained from a recent study by the present authors. A review and discussion of the sources and accuracy of the curve fitted data used herein are given in NASA RP 1260. Thompson, Richard A. and Lee, Kam-Pui and Gupta, Roop N. Langley Research Center RTOP 506-40-91-01...
Computer Codes for the Evaluation of Thermodynamic and Transport Properties for Equilibrium Air to 30000 K
Computer Codes for the Evaluation of Thermodynamic Properties, Transport Properties, and Equilibrium Constants of an 11-Species Air Model
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722122003
Category :
Languages : en
Pages : 50
Book Description
The computer codes developed provide data to 30000 K for the thermodynamic and transport properties of individual species and reaction rates for the prominent reactions occurring in an 11-species nonequilibrium air model. These properties and the reaction-rate data are computed through the use of curve-fit relations which are functions of temperature (and number density for the equilibrium constant). The curve fits were made using the most accurate data believed available. A detailed review and discussion of the sources and accuracy of the curve-fitted data used herein are given in NASA RP 1232. Thompson, Richard A. and Lee, Kam-Pui and Gupta, Roop N. Langley Research Center RTOP 506-40-31-02...
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722122003
Category :
Languages : en
Pages : 50
Book Description
The computer codes developed provide data to 30000 K for the thermodynamic and transport properties of individual species and reaction rates for the prominent reactions occurring in an 11-species nonequilibrium air model. These properties and the reaction-rate data are computed through the use of curve-fit relations which are functions of temperature (and number density for the equilibrium constant). The curve fits were made using the most accurate data believed available. A detailed review and discussion of the sources and accuracy of the curve-fitted data used herein are given in NASA RP 1232. Thompson, Richard A. and Lee, Kam-Pui and Gupta, Roop N. Langley Research Center RTOP 506-40-31-02...
NASA Reference Publication
Scientific and Technical Aerospace Reports
Calculations and Curve Fits of Thermodynamic and Transport Properties for Equilibrium Air to 30000 K
Calculations and Curve Fits of Thermodynamic and Transport Properties for Equilibrium Air to 30000 K
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722292836
Category :
Languages : en
Pages : 82
Book Description
A self-consistent set of equilibrium air values were computed for enthalpy, total specific heat at constant pressure, compressibility factor, viscosity, total thermal conductivity, and total Prandtl number from 500 to 30,000 K over a range of 10(exp -4) atm to 10(exp 2) atm. The mixture values are calculated from the transport and thermodynamic properties of the individual species provided in a recent study by the authors. The concentrations of the individual species, required in the mixture relations, are obtained from a free energy minimization calculation procedure. Present calculations are based on an 11-species air model. For pressures less than 10(exp -2) atm and temperatures of about 15,000 K and greater, the concentrations of N(++) and O(++) become important, and consequently, they are included in the calculations determining the various properties. The computed properties are curve fitted as a function of temperature at a constant value of pressure. These curve fits reproduce the computed values within 5 percent for the entire temperature range considered here at specific pressures and provide an efficient means for computing the flowfield properties of equilibrium air, provided the elemental composition remains constant at 0.24 for oxygen and 0.76 for nitrogen by mass. Gupta, Roop N. and Lee, Kam-Pui and Thompson, Richard A. and Yos, Jerrold M. Langley Research Center...
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722292836
Category :
Languages : en
Pages : 82
Book Description
A self-consistent set of equilibrium air values were computed for enthalpy, total specific heat at constant pressure, compressibility factor, viscosity, total thermal conductivity, and total Prandtl number from 500 to 30,000 K over a range of 10(exp -4) atm to 10(exp 2) atm. The mixture values are calculated from the transport and thermodynamic properties of the individual species provided in a recent study by the authors. The concentrations of the individual species, required in the mixture relations, are obtained from a free energy minimization calculation procedure. Present calculations are based on an 11-species air model. For pressures less than 10(exp -2) atm and temperatures of about 15,000 K and greater, the concentrations of N(++) and O(++) become important, and consequently, they are included in the calculations determining the various properties. The computed properties are curve fitted as a function of temperature at a constant value of pressure. These curve fits reproduce the computed values within 5 percent for the entire temperature range considered here at specific pressures and provide an efficient means for computing the flowfield properties of equilibrium air, provided the elemental composition remains constant at 0.24 for oxygen and 0.76 for nitrogen by mass. Gupta, Roop N. and Lee, Kam-Pui and Thompson, Richard A. and Yos, Jerrold M. Langley Research Center...
Calculations and Curve Fits of Thermodynamic and Transport Properties for Equilibrium Air to 30 000 K
NASA Tech Briefs
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1308
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1308
Book Description