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首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat and mass transfer at the ignition of vapors of volatile liquid fuels by hot metal core: Experimental study and modelling
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Heat and mass transfer at the ignition of vapors of volatile liquid fuels by hot metal core: Experimental study and modelling

机译：热金属芯点燃挥发性液体燃料蒸气时的传热和传质：实验研究和建模

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摘要

Measurements are reported on the main factors and mechanisms of heat and mass transfer controlling the ignition of mixtures of fuel vapors (gasoline Super 95) and oxidant (air) by a metal core (heated at temperatures higher than 1300 K) taking advantage of using cross-correlation recording and measuring system including optical method of tracer visualization. The ignition delay time was measured for different core temperatures and gas gap between heat source and liquid fuel surface which evaporates at moderate temperatures (about 300 K). A physical model of the process was formulated and predictive mathematical model elaborated on the basis of experimental results. A good agreement between numerical and experimental results is obtained. The modes of air-vapor mixtures ignition for liquid fuels by local heating are established from the developed mathematical model of heat and mass transfer.
机译：报告了有关利用传热控制通过金属芯（加热温度高于1300 K）控制燃料蒸气（汽油Super 95）和氧化剂（空气）的混合物着火的传热和传质的主要因素和机理的测量结果。 -相关记录和测量系统，包括示踪剂可视化的光学方法。针对不同的核心温度以及在中等温度（约300 K）下蒸发的热源与液体燃料表面之间的气隙，测量了点火延迟时间。建立了过程的物理模型，并根据实验结果阐述了预测数学模型。在数值和实验结果之间取得了很好的一致性。通过开发的传热和传质数学模型，建立了通过局部加热来点燃液体燃料的空气-蒸汽混合物的燃烧模式。

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