Development of a new skeletal mechanism for n-decane oxidation under engine-relevant conditions based on a decoupling methodology

Development of a skeletal mechanism for diesel surrogate fuel by using a decoupling methodology

“…This makes it possible to integrate the diesel surrogate mechanism into multidimensional CFD models for engine combustion simulations. (6) Several mechanisms for n-heptane, iso-octane, and n-decane have been developed using the decoupling methodology in our previous work [33,34,44]. It has been shown that the predictions from the newly developed mechanisms exhibit reasonable agreement with measurements of ignition delay times, primary species concentrations, laminar flame speeds, and extinction strain rates in fundamental experiments, as well as the auto-ignition, combustion and emission behaviors in compression ignition engines.…”

“…In order to realize this aim a decoupling methodology [33,34] was attempted herein to develop a skeletal oxidation mechanism for the diesel surrogate model. In the decoupling methodology, the oxidation of H 2 /CO/C 1 molecules is described with a detailed mechanism, while the oxidation of C 2 -C n (n is the carbon atom number of the fuel molecule) species is depicted with a relatively simplified mechanism.…”

“…Finally, the above two steps were iterated until the predicted ignition delays and primary species concentrations were within acceptable tolerances. More about the optimization process can be found in our previous study [34]. It must be noted that the optimization of the reaction rate constants would restrict the operating range of the present mechanism to the conditions tested in this study.…”

“…[34], and only a brief introduction is presented here. The mechanism was developed based on previous work [41][42][43].…”

“…The detailed optimization process has been described in detail in Ref. [34], and only a brief description is presented herein.…”