ABSTRACT
An analytical version of the discrete ordinates method (ADO) is used to establish a concise and accurate solution for the Reverse Temperature Gradient problem in rarefied gas binary mixtures. The kinetic equations used are based in the McCormack kinetic model. It presents the complete development of an analytical solution in the spatial variable, in addition to numerical results for the critical values of latent heat for inversion from the direction of the temperature gradient and the heat flux of each gas in the mixtures Neon-Argon and Helium-Xenon. The algorithm is considered simple to elaborate and the code developed (in FORTRAN) requires around the one second to execute in a computer with Intel Core i3 - 2.30 GHz processor.
Keywords:
reverse temperature gradient; ADO method; McCormack model