High-pressure fuel spray ignition behavior with hot surface interaction
نویسندگان
چکیده
Fuel-flexible aircraft propulsion systems using compression ignition engines will require novel strategies for reducing the delay of low-reactivity fuels to feasible timescales. Hot surface fuel sprays has been implemented in some practical situations, but complex nature flame formation within spray structure poses significant challenges. In order design next-generation devices, capacity hot heating elements promote must be investigated. this study, a rapid machine (RCM) was used examine process single kerosene-based F-24 jet with cylindrical element inserted into periphery. The experiments, performed moderately high injection pressures 40 MPa, have demonstrated two modes governed by temperature and insertion depth element. There exists an optimal position where tip is located vapor cone around liquid spray. For configuration, critical identified (?1250 K), above which short delays associated “spray ignition” mode are consistently achieved. case, local kernel propagates downstream lift-off length before full comparison, below slower “volumetric” results. extended may impractical operating at speeds increased altitude.
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ژورنال
عنوان ژورنال: Proceedings of the Combustion Institute
سال: 2021
ISSN: ['1873-2704', '1540-7489']
DOI: https://doi.org/10.1016/j.proci.2020.08.041