2 edition of **Simplified curve fits for the thermodynamic properties of equilibrium air** found in the catalog.

Simplified curve fits for the thermodynamic properties of equilibrium air

Srinivasan, S.

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- 9 Currently reading

Published
**1987**
by National Aeronautics and Space Administration, Scientific and Technical Information Office, For sale by the National Technical Information Service in Washington, D.C, Springfield, Va
.

Written in English

- Aerodynamics, Hypersonic -- Tables.

**Edition Notes**

Bibliography: p. 44.

Statement | S. Srinivasan and J.C. Tannehill, K.J. Weilmuenster. |

Series | NASA reference publication ;, 1181 |

Contributions | Tannehill, K. James., Weilmuenster, John C. |

Classifications | |
---|---|

LC Classifications | TL571.5 .S75 1987 |

The Physical Object | |

Pagination | iii, 44 p. : |

Number of Pages | 44 |

ID Numbers | |

Open Library | OL2495223M |

LC Control Number | 87602359 |

ΔH of the air for each path. The following heat capacities for air may be assumed independent of temperature: C V = and C P = J mol-1 K-1 Assume also for air that PV/T is a constant, regardless of the changes it undergoes. At K and 1 bar the molar volume of air . Thermodynamic diagrams are diagrams used to represent the thermodynamic states of a material (typically fluid) and the consequences of manipulating this material. For instance, a temperature– entropy diagram (T–s diagram) may be used to demonstrate the behavior of .

These details include the curve fits used for defining thermodynamic properties of the 11 species air model, curve fits for collision cross sections, expressions for transport properties, the chemical kinetics models, and the vibrational and electronic energy relaxation models. On the basis of a simplified kinetic model of air. The evaluation of thermodynamic properties is required for the derivation of analytical solutions for the flow properties and propulsion parameters. Initially, the specific heats of a real gas at constant pressure and volume, and, respectively, are obtained from the thermodynamic relations: where the “ ” superscript denotes ideal gas property.

Thermodynamic Models & Physical Properties When building a simulation, it is important to ensure that the properties of pure components and mixtures are being estimated appropriately. In fact, selecting the proper method for estimating properties is one of the most . Thermodynamics, as with most concepts in science and physics, is most accurately described using mathematical equations. However, simple explanations, although not perfectly accurate, are sufficient to convey the information needed to understand everyday experiences. This article is an attempt to simplify these concepts.

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Simplified curve fits for the thermodynamic properties of equilibrium air. Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Office ; Springfield, Va.: For sale by the National Technical Information Service, (OCoLC) Material Type: Government publication, National government.

Calculations and curve fits of thermodynamic and transport properties for equilibrium air to 30 K [m Simplified curve fits for the transport properties of equilibrium air [microform] / S. Srinivasan, J.C. Simplified curved fits for the thermodynamic properties of equilibrium air [microform] /.

Corpus ID: Simplified curve fits for the thermodynamic properties of equilibrium air @inproceedings{SrinivasanSimplifiedCF, title={Simplified curve fits for the thermodynamic properties of equilibrium air}, author={Seshadri Srinivasan and John C.

Tannehill and K. James Weilmuenster}, year={} }. New improved curve fits for the thermodynamic properties of equilibrium air were developed.

The curve fits are for p = p(e,rho), a = a(e,rho), T = T(e,rho), s = s(e,rho), T = T(p,rho), h = h(p,rho), rho = rho(p,s), e = e(p,s) and a = a(p,s). These curve fits can be readily incorporated into new or existing Computational Fluid Dynamics (CFD) codes if real-gas effects are desired.

The curve fits Cited by: New, improved curve fits for the thermodynamic properties of equilibrium air have been developed. The curve fits are for pressure, speed of sound, temperature, entropy, enthalpy, density, and internal energy.

These curve fits can be readily incorporated into new or existing computational fluid dynamics codes if real gas effects are desired. The curve fits are constructed Cited by: Improved Curve Fits for the Thermodynamic Properties of Equilibrium Air Suitable for Numerical Computation Using Time-dependent Or Shock-capturing Methods, Part 1 Volume of Engineering Research Institute Report NASA contractor report: Authors: John C.

Tannehill, P. Mugge: Publisher: National Aeronautics and Space Administration, Simplified curve fits for the thermodynamic properties of equilibrium air were devised for use in either the time-dependent or shock-capturing computational methods.

Improved curve fits for the thermodynamic properties of equilibrium air suitable for numerical computation using time-dependent or shock-capturing methods, part 1 Simplified curve fits for the thermodynamic properties of equilibrium air were devised for use in either the time-dependent or shock-capturing computational methods.

For the time-dependent method, curve fits were. Calculations and curve fits of thermodynamic and transport properties for equilibrium air to K Article (PDF Available) November with 1, Reads How we measure 'reads'.

The simplified curve fits developed in this study for the thermodynamic properties of equilibrium air allow the user to reduce computer time and storage while maintaining good accuracy. This is particularly true in the "time-dependent” method, since the simplified curve fits could be used until near the end of a calculation when the "steady.

New, improved curve fits for the thermodynamic properties of equilibrium air have been developed. The curve fits are for pressure, speed of sound, temperature, entropy, enthalpy, density, and internal energy.

These curve fits can be readily incorporated into new or existing computational fluid dynamics codes if real gas effects are desired. 2 S. Srinivasan, J. Tannehill, and, K. Weilmuenster, Simplified Curve Fits for the Thermodynamic Properties of Equilibrium Air, NASA RP, Aug.

[13] Srinivasan S. and Tannehill J. C., “ Simplified Curve Fits for the Transport Properties of Equilibrium Air,” NASA CRGoogle Scholar [14] Bailey H.

E., “ Programs for Computing Equilibrium Thermodynamic Properties of Gases,” NASA TN D, Google Scholar [15] Prabhu R. and Erickson W. Simplified curve fits for the thermodynamic properties of equilibrium air were devised for use in either the time-dependent or shock-capturing computational methods.

For the time-dependent method, curve fits were developed for p = p(e, rho), a = a(e, rho), and T = T(e, rho). Srinivasan S, Tannehill J C, Weilmuenster K J a Simplified curve fits for the thermodynamic properties of equilibrium air. NASA RP Srinivasan S, Tannehill J C, Weilmuenster K J b Simplified curve fits for the transport properties of equilibrium air.

NASA CR Tannehill J C, Venkatapathy E, Rakich J V Numerical solution. The thin-layer Navier-Stokes equations are solved by a semi-implicit central finite-difference method. The thermodynamic and transport properties of equilibrium air are obtained from curve-fitting routines and from a Gibbs-energy minimization procedure.

Results are. Srinivasan S, Tannehill J C and Weilmuenster K J. "Simplified Curve Fits for the Thermodynamic Properties of Equilibrium Air", NASA RP, August [2] Anderson, John. Modern Compressible Flow. 2nd ed. ISBN# McGraw-Hill, [3] Grossman, Bernard.

Simplified curve fits for the thermodynamic properties of equilibrium air. [Washington, DC]: National Aeronautics and Space Administration, Scientific and Technical Information Office ; [Springfield, Va.]: [For sale by the National Technical Information Service], (OCoLC) Material Type.

In order to overcome some difficulties observed in the computation of hypersonic flows, a robust, accurate and efficient numerical scheme based on AUSM-type splitting is developed.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. SIMPLIFIED CURVE FITS FOR EQUILIBRIUM AIR Simplified curve fits for the thermodynamic properties of equilibrium air have been constructed for use in either the "time-dependent" or "shock-capturing" computational methods.

correlations were develaped for p = p(e,p), a = a(e,p), and T T(p,p).Ammonia - Properties at Gas-Liquid Equilibrium Conditions - Figures and tables showing how the properties of liquid and gaseous ammonia changes along the boiling/condensation curve (temperature and pressure between triple point and critical point conditions).

An ammonia phase diagram are included.Thermodynamic Properties of Moist Air. Thermodynamic Properties of Water at equilibrium between moist air and the condensed water phase (liq-uid or solid). Unless otherwise stated, saturation refers to a flat inter-face surface between the moist air and the condensed phase.