摘要
在航空发动机燃烧室中的航空煤油雾化成液滴后蒸发燃烧,单液滴蒸发特性不但是燃烧室设计参数之一也是两相湍流燃烧模型组的重要组成部分,对液体燃料液滴蒸发特性研究具有重要意义。对单液滴蒸发测试及数据处理方法进行总结,综述了国内外不同测试条件下的液滴蒸发试验装置设计、基本原理与操作步骤;对比了传统与新型液滴温度测量方法及液滴成像方法;分析了不同液滴图像处理方法的优缺点,最后总结了造成液滴蒸发试验误差的主要因素为仪器误差、液滴尺寸换算误差、挂丝方式生成的误差、挂丝带来的误差、图像测量误差。重力场、环境温度、环境压力及来流速度对液滴直径和液滴温度变化的影响分析,以及随着测试技术的发展所应用的多种先进测试方法和技术,为单液滴蒸发试验装置的设计、测试技术的研究提供参考,为液滴蒸发试验开辟了新的研究思路。
In the combustor of an aeroengine,aviation kerosene vaporizes into droplets and then evaporates for combustion.Evaporation characteristics of single droplet is not only one of the important parameters in the design of the combustor,but also an important part of the two-phase turbulent combustion model group.The study of liquid fuel droplet evaporation characteristics has important significance.The single droplet evaporation experimental devices and data processing methods were summarized.Basic principles and operating procedures of droplet evaporation test apparatus designed for different environmental conditions at home and abord were summarized.Traditional and new droplet temperature measurement methods and droplet imaging methods were compared.The advantages and disadvantages of different droplet image processing methods were analyzed.Finally,the main factors causing the error of droplet evaporation were summarized as instrumental error,droplet size conversion error,error generated by wire hanging mode,error caused by hanging wire,image measurement error.The influence of gravity field,ambient temperature,ambient pressure,incoming flow velocity on droplet diameter and droplet temperature change were analyzed.With the development of the test technology,various advanced test methods and technologies applied provide reference for the design of the single droplet evaporation experiment and the study of the test technology,and open up a new research idea for the droplet evaporation experimentat the same time.
作者
王方
武召阳
任杰
高涵
金捷
WANG Fang;WU Zhao-yang;REN jie;GAO Han;JIN Jie(School of Energy and Power Engineering,Beihang University,Beijing 100191,China)
出处
《航空发动机》
北大核心
2020年第6期53-61,共9页
Aeroengine
基金
国家自然科学基金(91741125)
国家科技重大专项(2017-I-0001-0005,2017-I-0001-0001)资助。
关键词
单液滴蒸发
测量装置
图像处理
航空煤油
燃烧室
航空发动机
single droplet evaporation
measuring device
image process
aviation kerosene
combustor
aeroengine
