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SIMULATION OF GAS TURBINE IGNITION USING LARGE EDDY SIMULATION APPROACH

机译:大涡模拟方法对燃气轮机点火的模拟

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This study simulates spark ignition of a modular stratified flow facility using realistic aviation fuel. The combustion model uses a look-up table approach, where the data of the look-up table are collected from lower dimension flamelet/homogeneous ignition calculations. The combustion model is incorporated into a previously developed low-Mach solver, based on which a module is further introduced that uses field patching strategies to represent the ignitor impulse. Simulated results of both ignition successful and failure can be achieved under different initial spark energy input, and the physical effects behind the different ignition behavior is related to the dynamics of the spark kernel impulse. It is further shown that the simulated ignition process exhibits similar features compared to associated experimental results and allows for detailed analysis of the transition to ignited or extinguished states.
机译:这项研究模拟了使用实际航空燃料的模块化分层流设施的火花点火。燃烧模型使用查找表方法,其中查找表的数据是从低维小火焰/均质点火计算中收集的。燃烧模型被合并到先前开发的低马赫求解器中,在此基础上,进一步引入了一个模块,该模块使用现场修补策略来表示点火器脉冲。在不同的初始火花能量输入下,可以实现点火成功和失败的模拟结果,并且不同点火行为背后的物理效应与火花核脉冲的动力学有关。进一步表明,与相关的实验结果相比,模拟的点火过程具有相似的特征,并且可以详细分析过渡到点火或熄灭状态。

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