Computation engine

a) thermodynamic properties

by minimization of the free enthalpy by the way Lagrange's multiplicands and the steepest descent algorithm as describe by White et Dantzig. This method known as method of RAND allows the resolution of very complex systems. The Lagrange's multiplicands must be identified to chemical potentials of elements, then the relative precision for the moles number of minor species is the same as for major species.

b) transport properties

are based on the resolution of Boltzmann's integro-differential equation using the method of Chapman and Enskog. The calculation of the electrical conductivity is performed to the third approximation, as recommended by Devoto. The thermal conductivity is determined as the sum of four components : the heavy species translational thermal conductivity, the electron translational thermal conductivity, the internal thermal conductivity, all developed at the second approximation, and the reaction conductivity calculated according to the theory of Butler and Brokaw, at the first approximation. The viscosity, which is that of heavy species, is calculated to the first approximation. The interaction potentials used were found in the classical references.

c) the electron temperature

in a gas under an electric field.