Combined symbolic and numerical approach to constrained nonlinear lumping—With application to an {if{frsol|{rmH{in2}/O{in2}} oxidation model

摘要: Abstract An approach to constrained nonlinear lumping for dimension reduction of chemical kinetic models is presented. The combines general symbolic methods and numerical techniques arrive at an analytically reduced model in practical applications homogeneous systems. This method can be applied any first- second-order reaction system with arbitrary complexity. H 2 O oxidation used as example illustrating this method. resultant lumped given by modified approximations have very good accuracy the temperature all species. approximation initial conditions, but formula quite complicated. first-order has a simple form, two empirical parameters need determined condition.