The application of chemical reduction methods to a combustion system exhibiting complex dynamics

Detailed chemical kinetic models for the low-temperature combustion of hydrocarbons with application to gasoline and diesel fuel surrogates

“…The methods of reduction based on the time-scales involved in the kinetic equations include the quasi-steady-state approximation (QSSA) [338], the computational singular perturbation (CSP) method [339] and the low-dimensional manifold (ILDM) method [340]. Few applications of these techniques to model the low temperature oxidation of large hydrocarbons have been published.…”

“…Detailed or reduced models can also be used to run large numbers of simulations in order to derive fitted functions or repro-models (mostly polynomials) [338,343] or look-up tables in order to store target data under a wide range of conditions (pressure, temperature, mixture compositions) and to use them to run reactive flow simulations. Look-up tables, including chemical progress rate, cool flame ignition delay time and heat release [344] or mole fractions of major species [345], have been recently built from the mechanisms of Nancy for n-heptane and n-decane/1-methylnaphthalene blends.…”

The G-Scheme: A framework for multi-scale adaptive model reduction

“…As a test model featuring a complicated nonlinear behavior we consider the isobaric CSTR at very low pressure involving CO=H 2 kinetics proposed by Brad et al [30]. The kinetic mechanism involves 11 species and 33 reactions.…”

“…The inlet molar fraction composition is fX 0 H 2 ; X 0 O 2 ; X 0 CO g ¼ f0:005; 0:5; 0:495g for all test conditions, and we take the inlet temperature to be the same as the exterior temperature, i.e., T 0 ¼ T A . The constants in this system, as well as all other constitutive relations, are the same as in [30].…”

Numerical Simulation of Hydrogen Combustion: Global Reaction Model and Validation

“…Presently, several researches (Sung et al, 2001;Bhattacharjee et al, 2003;Law, 2005, 2009;Law, 2006;Brad et al, 2007;Fernández-Galisteo et al, 2009) paid attention on mechanism reduction to obtain one-step or skeletal mechanisms, which involves in eliminating unimportant reactions and species via several methods such as sensitivity analysis, application of partial equilibrium and quasi-steady-state assumptions, and directed relation graph. However, those methods require strong mechanism-dependent knowledge and are generally time-consuming due to the iterative procedure and validation process for eliminating species (Lu and Law, 2005).…”