An extensive study on skeletal mechanism reduction for the oxidation of C0–C4 fuels

Development of Natural Gas Chemical Kinetic Mechanisms and Application in Engines: A Review

“…To improve the prediction for the ignition delay time of natural gas, Mohamed et al 52 adopted an optimized mechanism validated against a wide range of experimental conditions; nevertheless, the prediction of ignition delay time was not verified for the temperature above 1050 K, suggesting that ignition delay time may not be well reproduced by the mechanism. The comprehensive skeletal mechanism developed in the study of Xue et al, 53 which is reduced using six direct relation graph (DRG) related methods for different key species could predict the important characteristics for single-component fuels reasonably. Obviously, the skeletal mechanism cannot reproduce the combustion properties of all multicomponent mixed fuels.…”

Application of static integrated skeletal reduction and tabulation of dynamic adaptive chemistry in the combustion simulation of ethylene-fueled scramjet combustor

“…To facilitate the application of fuel mechanisms in combustion simulation of combustors, many mechanism reduction methods including skeletal reduction, lumping, timescale analysis, etc., are developed in recent years to obtain skeletal mechanism without sacricing accuracy on relevant combustion characteristics within a certain range of working conditions. 42,44 Skeletal reduction as the main reduction method eliminates unnecessary species and reactions by dealing with complex coupling between species or reactions. 42,44 Lu et al 45 rst proposed the directed relation graph (DRG) method, and then a series of derivative methods including revised-DRG (r-DRG), 46 DRG with error propagation (DRGEP), 47 revised-DRGEP (r-DRGEP), 44 path ux analysis (PFA), 48 linearized error propagation (LEP), 49 etc., are successively developed.…”

Assessment and development of a novel reduced mechanism for methane combustion in computational fluid dynamics modeling

“…Variety methodologies in mechanism reduction have been developed in decades of research to minimize the mechanism sizes and stiffness. It can be characterized into roughly four primary groups based on its functions, including skeletal (Xue et al, 2020;Wu et al, 2020), lumping (Till et al, 2019;Brunialti et al, in press), time-scale analysis (Koniavitis et al, 2017;Chang et al, 2020), and stiffness reduction (Felden et al, 2019;Malpica Galassi et al, 2022), in which they employ the user-specified tolerance for regulating accuracy. Several public mechanisms are usually constructed in a restricted combustion condition, such as a flow regime, to obtain a more downsize, resulting in a narrow range of usability (Zhao et al, 2022).…”