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Empirical Equations for the Thermodynamic Properties of Air and Nitrogen to 15,000°K

Report Number: AEDC-TDR-63-138
Author: Lewis, Clark H.
Author: Burgess, Ernest G., III
Corporate Author: ARO, Inc.
Date of Publication: 1963-07
Pages: 43
Contract: AF 40(600)-1000
Project: None Given
AD Number: AD0411624

Empirical equations were obtained for equilibrium dissociating and ionizing air and nitrogen for temperatures up to 15,000°K and in the entropy range 1.42 ≤ log (S/R) ≤ 2.06. The corresponding density range is approximately 10-6 to 102 amagats. The density ρ (p,S), enthalpy H (p,S), compressibility factor Z (p,S), and speed of sound a (p,S) are presented in equation form and as an IBM Fortran subroutine program. The errors in each empirical surface are indicated.

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