A Review of Reaction Rates and Thermodynamic and Transport Properties for an 11-Species Air Model for Chemical and Thermal Nonequilibrium Calculations to 30000 K PDF Download
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722144586
Category :
Languages : en
Pages : 92
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Book Description
Reaction rate coefficients and thermodynamic and transport properties are reviewed and supplemented for the 11-species air model which can be used for analyzing flows in chemical and thermal nonequilibrium up to temperatures of 3000 K. Such flows will likely occur around currently planned and future hypersonic vehicles. Guidelines for determining the state of the surrounding environment are provided. Curve fits are given for the various species properties for their efficient computation in flowfield codes. Approximate and more exact formulas are provided for computing the properties of partially ionized air mixtures in a high energy environment. Limitations of the approximate mixing laws are discussed for a mixture of ionized species. An electron number-density correction for the transport properties of the charged species is obtained. This correction has been generally ignored in the literature. Gupta, Roop N. and Yos, Jerrold M. and Thompson, Richard A. and Lee, Kam-Pui Langley Research Center...
Author: Roop N. Gupta
Publisher:
ISBN:
Category :
Languages : en
Pages : 92
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722144586
Category :
Languages : en
Pages : 92
Get Book Here
Book Description
Reaction rate coefficients and thermodynamic and transport properties are reviewed and supplemented for the 11-species air model which can be used for analyzing flows in chemical and thermal nonequilibrium up to temperatures of 3000 K. Such flows will likely occur around currently planned and future hypersonic vehicles. Guidelines for determining the state of the surrounding environment are provided. Curve fits are given for the various species properties for their efficient computation in flowfield codes. Approximate and more exact formulas are provided for computing the properties of partially ionized air mixtures in a high energy environment. Limitations of the approximate mixing laws are discussed for a mixture of ionized species. An electron number-density correction for the transport properties of the charged species is obtained. This correction has been generally ignored in the literature. Gupta, Roop N. and Yos, Jerrold M. and Thompson, Richard A. and Lee, Kam-Pui Langley Research Center...
Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781729482346
Category : Science
Languages : en
Pages : 70
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Book Description
Reaction rate coefficients and thermodynamic and transport properties are provided for the 11-species air model which can be used for analyzing flows in chemical and thermal nonequilibrium. Such flows will likely occur around currently planned and future hypersonic vehicles. Guidelines for determining the state of the surrounding environment are provided. Approximate and more exact formulas are provided for computing the properties of partially ionized air mixtures in such environments. Gupta, Roop N. and Yos, Jerrold M. and Thompson, Richard A. Langley Research Center...
Author:
Publisher:
ISBN:
Category : Aerothermodynamics
Languages : en
Pages : 108
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Book Description
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 84
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Book Description
Author: J. T. Curtis
Publisher:
ISBN:
Category : Computational fluid dynamics
Languages : en
Pages : 98
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Book Description
NEQPAK is a set of Fortran 77 routines and databases which are useful in the development and application of nonequilibrium flow solvers. The set includes a library of subroutines for evaluating reaction rates and the thermal and transport properties of high-temperature ionized gases. Thermal nonequilibrium may be treated by applying modules which evaluate the interactions between molecular energy modes. The interactions between vibrational and chemical relaxation may be investigated by using multiple- temperature reaction models or by applying the coupling factors suggested by contemporary theories. A utility for correlating user-supplied reaction data with the material properties database is also provided. Most of the modules are optimized for use on vector-processing machines, and have been designed for the efficient use of memory. The thermal properties database covers the range from 100 to 35,000 K, and the transport properties database extends from 300 to 30, 000 K, and the transport properties database extends from 300 to 30,000 K. This report describes the thermophysical models embodied in NEQPAK and explains how the routines may be incorporated into hypersonic CFD codes.
Author:
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Category : Aeronautics
Languages : en
Pages : 1036
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 188
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Book Description
Author: Frank K. Lu
Publisher: AIAA
ISBN: 9781600864483
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 694
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Book Description
Author: Max Mulder
Publisher: BoD – Books on Demand
ISBN: 9533074736
Category : Technology & Engineering
Languages : en
Pages : 626
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Book Description
In its first centennial, aerospace has matured from a pioneering activity to an indispensable enabler of our daily life activities. In the next twenty to thirty years, aerospace will face a tremendous challenge - the development of flying objects that do not depend on fossil fuels. The twenty-three chapters in this book capture some of the new technologies and methods that are currently being developed to enable sustainable air transport and space flight. It clearly illustrates the multi-disciplinary character of aerospace engineering, and the fact that the challenges of air transportation and space missions continue to call for the most innovative solutions and daring concepts.
