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SIMULATION OF GAS TURBINE IGNITION USING LARGE EDDY SIMULATION APPROACH

机译:使用大型涡模拟方法仿真燃气轮机点火

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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:本研究模拟了使用现实航空燃料模块化分层流动设施的火花点火。燃烧模型使用查找表方法,其中查找表的数据从较低尺寸火焰/均匀点火计算中收集。燃烧模型结合到先前显影的低马赫求解器中,基于该燃烧模块,基于该求解器,进一步引入模块,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,不同点火行为背后的物理效应与火花内核脉冲的动态相关。进一步表明,与相关的实验结果相比,模拟的点火过程表现出类似的特征,并且允许对转换以点燃或熄灭状态的详细分析。

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