Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL SIMULATION FOR REDUCED CHEMICAL KINETIC MECHANISM: A CASE FOR CARBON MONOXIDE AND HYDROGEN
Submission Author:
Rafael Torres Teixeira , RS
Co-Authors:
Rafael Torres Teixeira, Rafaela Sehnem, Letícia Kaufmann, Daniela Buske, Regis Sperotto de Quadros
Presenter: Regis Sperotto de Quadros
doi://10.26678/ABCM.ENCIT2018.CIT18-0277
Abstract
Stiff ODE systems are present in the most of chemical kinetic mechanisms and their numerical simulation has a very high computational cost. Because of this came the necessity to improve the employed work to solve this problems and choose an attractive method for numerical simulation with good accuracy and consistent results. Applying and validating the steady-state hypothesis for some chemical species, we build a reduced mechanism for carbon monoxide with three steps, contend as sub-mechanism the two-step reduced mechanism for hydrogen. For the numerical simulation, we have used the Rosenbrock method of the fourth order, for have the necessary stability and it leads to good results with low tolerance of error in comparison with other data found in the literature.
Keywords
Stiff ODE, Hydrogen, carbon monoxide, Chemical kinetic mechanisms, Rosenbrock
