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| Study on the Construction Method of F-76 Fuel Skeleton Mechanism |
| DOI：10.13949/j.cnki.nrjgc.2024.01.011 |
| Key Words:skeleton mechanism mechanism reduction spray model combustion characteristic numerical simulation |
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| Abstract:In order to develop a compact， high-precision and polycyclic aromatic hydrocarbons （PAHs） containing high carbon fuel model fuel mechanism and apply it to computational fluid dynamics （CFD） simulation， a new method integrating detailed C0—C4 core mechanism and C5—Cn mechanism of the skeleton was proposed to develop the high carbon fuel skeleton reaction mechanism. This method was used to build the corresponding skeleton reaction mechanism for the model fuels whose base fuels were n-neneneba hexadecane （NC16H34）， 2，6，10-trimethyldodecane （C15H32-26X） and n-butyl benzene （C6H5C4H9） respectively. Then， a skeleton mechanism containing 164 species and 654 elementary reactions was obtained based on mechanism simplification methods. The constructed mechanism was validated by fundamental combustion data， including shock tube ignition delay times， flow reactor oxidation data， laminar flame speeds， and extinction limits of the base fuels. Then， the skeleton mechanism was coupled to a three-dimensional CFD spray model to simulate the spray combustion process in a constant volume spray combustion chamber（CVSCC）. The results show that the simulation values of spray combustion characteristics can match well with the experimental values， which proves the effectiveness of the framework mechanism in combustion CFD simulation. |
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