Technical Paper
Development of Biodiesel Skeletal Mechanisms for Kinetic Combustion Modeling
2013-10-14
2013-01-2633
This paper reports the developmental work of skeletal biodiesel surrogate mechanisms specifically for integration with computational fluid dynamics (CFD) solvers. The fuels of interests here were methyl esters of coconut, palm and soybean. Their combustion kinetics were collectively represented by a detailed mechanism with appropriate components of a biodiesel surrogate (methyl decanoate/methyl-9-decenoate) and a diesel surrogate (n-heptane). As a result of computational complexity induced by the detailed mechanism with 3299 species and 10806 reactions, several mechanism reduction methods were employed such as directed relation graph, isomer lumping and temperature sensitivity analysis. Three different skeletal mechanisms, with the inclusion of low- and high-temperature chemistries, were built as a result of different governing reaction pathways in each fuel.
