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首页> 外文会议>IUTAM Symposium on Turbulent Mixing and Combustion >CHARACTERISATION OF AN AIR-BLAST INJECTION DEVICE WITH FORCED PERIODIC ENTRIES
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CHARACTERISATION OF AN AIR-BLAST INJECTION DEVICE WITH FORCED PERIODIC ENTRIES

机译：强制周期性条目的空气喷射装置的表征

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This research project is related to the control of combustion instability occurring intermittently in aeroengines. The unsteadiness of the flow is induced by a particular instability called Combustion-Driven Oscillations (CDO). The experimental set-up at the ONERA Centre de Toulouse was designed in order to simulate the modulation exerted by CDO on the injection process. By pulsating both gas and liquid entries with specific actuators it is possible to reproduce the effect of the acoustic pressure on the resulting spray. This paper presents the first measurements performed on the free jet under non reacting and atmospheric conditions. The aim is to acquire data on the two-phase flow characteristics (pressure, temperature, fuel particle size and local spray density) for one period of pulsation. These experimental data are used to understand the periodic flow behaviour. They are also required for a further validation of a numerical code.
机译：该研究项目与在航空发动机间歇性地发生的燃烧不稳定的控制有关。通过特定的不稳定性诱导流动的不稳定性，称为燃烧驱动的振荡（CDO）。设计了Onera Center De Toulouse的实验设置，以模拟CDO对注射过程中的调制。通过用特定致动器脉动两种气体和液体条目，可以再现声压对所得喷雾的影响。本文介绍了在非反应和大气条件下对游离喷射进行的第一次测量。目的是在一个脉动的一个时期获取关于两相流特性（压力，温度，燃料粒度和局部喷雾密度）的数据。这些实验数据用于了解定期流动行为。它们也需要进一步验证数字代码。

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