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首页> 外文期刊>JSME International Journal. Series B, Fluids and Thermal Engineering >Numerical Analysis of the Interaction between Thermo-Fluid Dynamics and Auto-Ignition Reaction in Spark Ignition Engines
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Numerical Analysis of the Interaction between Thermo-Fluid Dynamics and Auto-Ignition Reaction in Spark Ignition Engines

机译:火花点火发动机热流动力学与自燃反应相互作用的数值分析

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The CFD simulations were performed integrating the low-temperature oxidation reaction. Analyses were made with respect to the first auto-ignition location in the case of a premixed-charge compression auto-ignition in a laminar flow field and in the case of the auto-ignition in an end gas during an S.I. Engine combustion process. In the latter simulation, the spatially-filtered transport equations were solved to express fluctuating temperatures in a turbulent flow in consideration of strong non-linearity to temperature in the reaction equations. It is suggested that the first auto-ignition location does not always occur at higher-temperature locations and that the difference in the locations of the first auto-ignition depends on the time period during which the local end gas temperature passes through the region of shorter ignition delay, including the NTC region.
机译:结合了低温氧化反应进行了CFD模拟。对于在层流场中的预混合充气压缩自动点火的情况以及在S.I.发动机燃烧过程中在末端气体中的自动点火的情况,针对第一自动点火位置进行了分析。在后一模拟中,考虑到反应方程中对温度的强烈非线性,求解了空间滤波的输运方程,以表达湍流中的波动温度。建议第一自动点火位置并不总是出现在较高温度的位置,并且第一自动点火位置的差异取决于本地最终气体温度通过较短温度区域的时间段。点火延迟,包括NTC区域。

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