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首页> 外文会议>IUTAM Symposium on Turbulent Mixing and Combustion, Jun 3-6, 2001, Kingston, Ontario, Canada >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：具有强制周期参数的喷砂装置的表征

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摘要

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：该研究项目与控制航空发动机中间歇性发生的燃烧不稳定性有关。流体的不稳定是由称为燃烧驱动振荡（CDO）的特定不稳定性引起的。设计了位于图卢兹ONERA中心的实验装置，以模拟CDO对注射过程的调节。通过用特定的致动器使气体和液体入口都产生脉动，可以再现声压对所产生的喷雾的影响。本文介绍了在无反应和大气条件下对自由射流进行的首次测量。目的是在一个脉动周期内获取有关两相流动特性（压力，温度，燃料颗粒大小和局部喷雾密度）的数据。这些实验数据用于了解周期性流动行为。进一步验证数字代码也需要它们。

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