Verifying Ignition Delay Predictions of a Detailed Kinetics Mechanism

With increasing regulation of NOx and particulate emissions and goals for improved fuel efficiency,there is an increasing need to employ reliable complex chemical kinetic mechanisms in engine combustion modeling, particularly in the prediction of ignition timing. The complexity of the mechanisms range from tens of species typically used in CFD calculations, to hundreds of species used in more accurate representations of fuel combustion. Testing and validation of these kinetic mechanisms over a wide range of engine operating conditions is necessary for predictive engine modeling. This application note focuses on how CHEMKIN can be used to calculate ignition delay using detailed chemistry and how to set up a library of validation cases.

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