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## Abstract This paper details a two‐equation procedure to calculate exactly mass and mole fractions, pressure, temperature, specific heats, speed of sound and the thermodynamic and jacobian partial derivatives of pressure and temperature for a five‐species chemically reacting equilibrium air. The procedure generates these thermodynamic properties using as independent variables either pressure and temperature or density and internal energy, for CFD applications. An original element in this procedure consists in the exact physically meaningful solution of the mass‐fraction and mass‐action equations. Air‐equivalent molecular masses for oxygen and nitrogen are then developed to account, within a mixture of only oxygen and nitrogen, for the presence of carbon dioxide, argon and the other noble gases within atmospheric air. The mathematical formulation also introduces a versatile system non‐dimensionalization that makes the procedure uniformly applicable to flows ranging from shock‐tube flows with zero initial velocity to aerothermodynamic flows with supersonic/hypersonic free‐stream Mach numbers. Over a temperature range of more than 10000 K and pressure and density ranges correspondin

Who reads Direct computation of thermodynamic properties of chemically reacting air with consideration to CFD?

Author

Joe Iannelli

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0271-2091)

Published

2003

Language

EN

Field

Engineering (Physical Sciences)