mcbride data paper

7/31/2019 Mcbride Data Paper

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This publication is available from the NASA Center for AeroSpace Information, 3016210390.

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Technical Memorandum

National Aeronautics and Space Administration

Lewis Research Center

Cleveland, Ohio 44135 3191

1. AGENCY USE ONLY (Leave blank)

10. SPONSORING/MONITORING

AGENCY REPORT NUMBER

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National Aeronautics and Space AdministrationWashington, DC 20546 0001

Available electronically athttp://gltrs.grc.nasa.gov/GLTRS

November 1992

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E5894

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Subject Categories: 77

Computer Program for Calculating and Fitting Thermodynamic Functions

Bonnie J. McBride and Sanford Gordon

Bonnie J. McBride, NASA Lewis Research Center. Sanford Gordon, Sanford Gordon and Associates under contract to

Sverdrup Technology, Inc., Lewis Research Center Group, 2001 Aerospace Parkway, Brook Park, Ohio 44142 (work

funded by NASA Contract NAS325266). Responsible person, Bonnie J. McBride, 2164335870.

A computer program is described which (1) calculates thermodynamic functions (heat capacity, enthalpy, entropy, and free

energy) for several optional forms of the partition function, (2) fits these functions to empirical equations by means of a

least-squares fit, and (3) calculates, as a function of temperature, heats of formation and equilibrium constants. The

program provides several methods for calculating ideal gas properties. For monatomic gases, three methods are given

which differ in the technique used for truncating the partition function. For diatomic and polyatomic molecules, five

methods are given which differ in the corrections to the rigid-rotator harmonic-oscillator approximation. A method for
http://gltrs.grc.nasa.gov/GLTRShttp://gltrs.grc.nasa.gov/GLTRShttp://gltrs.grc.nasa.gov/GLTRS

mcbride data paper

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