Model reduction and lumping procedures

摘要: Abstract To be of practical use, chemical kinetic mechanisms need to provide a high-fidelity description the combustion fuel components and their mixtures, while simultaneously retaining size compact enough keep computational cost reasonable. The generation such relies heavily on efficient reduction detailed mechanisms, which incorporate crucial knowledge but are often impractical for direct application in fluid dynamics calculation due large scales. Substantial advances have been made model past years. This chapter provides review these recent developments and, addition, gives future perspectives chemistry reduction. methods classified discussed with respect action chemistry, including elimination that explicitly remove elementary steps from scheme, lumping express information using fewer variables, dimension techniques introduce modeling assumptions, as quasi-steady-state assumption separation timescales. In extension approaches adaptive strategies is also surveyed. An automatic, multistage strategy developed by integrating various demonstrated an example substantial