在发动机相关条件下,气体射流对油膜影响的LIF和BOS同步研究

J. Reimer, M. Maliha, H. Kubach, T. Koch
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引用次数: 0

摘要

内燃机是全球二氧化碳排放的重要贡献者。可持续燃料被认为具有显著减少这些排放的巨大潜力。氢具有显著减少当地排放的潜力。它也可以直接注入燃烧室,在那里产生的射流与气缸壁相互作用,可以影响发动机的过程。为了能够量化这种影响,在这项工作中研究了燃料撞击。由于不同聚集状态的流体在此过程中相互作用,必须采用特殊的测量技术。气体燃料是可视化使用背景取向纹影技术。用激光诱导荧光观察油的液相。利用该技术,观察到气体射流的冲击可以使薄油膜变形,并且可以观察到孤立的分离效应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simultaneous LIF and BOS investigation of an impact of a gaseous jet on an oil film under engine relevant conditions

Internal combustion engines are a significant contributor to global CO2 emissions. Sustainable fuels are seen as having great potential to significantly reduce these emissions. Hydrogen has the potential to significantly reduce local emissions. It can also be injected directly into the combustion chamber, where the resulting jet interacts with the cylinder wall and can influence the engine process. To be able to quantify this influence, fuel impingement has been investigated in this work. As fluids with different states of aggregation interact with each other in this process, a special measurement technique has to be applied. The gaseous fuel is visualised using a background oriented schlieren technique. The liquid phase of the oil is visualised using laser induced fluorescence. Using this technique, it was observed that the impact of a gaseous jet can deform a thin oil film and that isolated detachment effects can be observed.

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