Practical Applications of the QSSA

Zambon and Qielliah (2007) also elaborated a method for the explicit, iteration-free calculation of the QSS concentrations. The method is based on modifications to the original matrix-based methods of Chen (1988) and is implemented in the Matlab coding environment utilising its symbolic programming capabilities. The method was used to develop an 18-step scheme for ethylene/air combustion from a skeletal scheme containing 31 species and 128 reversible elementary reactions, i.e. a similar level of reduction to that achieved by Lu and Law (2006c). 

Kalachev and Field (2001) reduced a simplified reaction model of tropospheric chemistry. Using non-dimensionalisation and timescale-based variable reduction, a simple 4-variable model was obtained. The features of this model were investigated and compared with other small skeleton tropospheric chemical models. 

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