Eventos Anais de eventos
CONEM 2018
X Congresso Nacional de Engenharia Mecânica
THE EFFECTS OF THE CROSS SECTION ON THE DIFFUSION COEFFICIENT OF BINARY GASEOUS MIXTURES
Submission Author:
Adriano Willian da Silva , PR
Co-Authors:
Adriano Willian da Silva
Presenter: Adriano Willian da Silva
doi://10.26678/ABCM.CONEM2018.CON18-1608
Abstract
The effects caused by the cross section on the reaction rate of a binary mixture of ideal gases which undergo a simple reversible symmetric reaction of the type A+A *) B+B are analyzed from the Boltzmann equation. The system is analyzed to a general case of the stage of chemical reaction and to the final stage of a chemical reaction where the systems tends of a chemical equilibrium. This stage the a reaction is known as fast reactions, because the reactive processes are of the same order as the elastics. The binary mixture is examined with a Champman-Enskog method and internal degrees of freedom of the particles of the gas are not considered into the account. The main objectives are to study the effect of the Present cross section and modified Present cross section in the diffusion coefficient of the gases mixture. It was verified by some factors- the concentration of the reagents, the activation energy and the heat of reaction. These factors change the diffusion coefficient of the reactive gases mixture and the modifications are great for small values of the activation energy and to Present reactive cross section .
Keywords
binary mixture, Diffusion coefficient, reactive cross section
