Ignition of a combustible mixture by a transient jet of hot reactive gas is important for safety of mines, prechamber ignition in\nIC engines, detonation initiation, and novel constant-volume combustors. The present work is a numerical study of the hot jet\nignition process in a long constant-volume combustor (CVC) that represents a wave rotor channel. The hot jet of combustion\nproducts from a prechamber is injected through a converging nozzle into the main CVC chamber containing a premixed fuel-air\nmixture. Combustion in a two-dimensional analogue of the CVC chamber is modeled using a global reaction mechanism, a skeletal\nmechanism, or a detailed reaction mechanism for three hydrocarbon fuels: methane, propane, and ethylene. Turbulence is modeled\nusing the two-equation SST
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