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[1]尹 婷,吴高杨,聂万胜.压力振荡环境下液滴蒸发动态响应特性研究[J].火箭推进,2015,41(04):19-28.
　YIN Ting,WU Gaoyang,NIE Wansheng.Study on dynamic response characteristics of droplet evaporation in pressure oscillation environment[J].Journal of Rocket Propulsion,2015,41(04):19-28.
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压力振荡环境下液滴蒸发动态响应特性研究

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 41 期数: 2015年04期 页码: 19-28 栏目: 研究与设计 出版日期: 2015-09-30
Title:
Study on dynamic response characteristics of droplet evaporation in pressure oscillation environment
作者:
尹 婷; 吴高杨; 聂万胜
装备学院，北京 101416
Author(s):
YIN Ting;  WU Gaoyang ;  NIE Wansheng
Equipment Academy, Beijing 101416, China
关键词:
压力振荡; 液滴; 蒸发; 影响因素
Keywords:
pressure oscillation;  droplet;  evaporation;  influence factor
分类号:
V434-34
文献标志码:
A
摘要:
设计了压力振荡环境液滴蒸发实验系统，开展了压力振荡环境下液滴蒸发动态响应特性实验研究，分析了压力振荡对液滴蒸发过程的影响，建立了压力振荡环境非稳态蒸发模型，并基于该模型考察了振荡频率、振幅、燃烧室平均压力及温度对蒸发特性的影响规律。实验表明，压力振荡环境对液滴蒸发过程具有明显的促进作用，增加了液滴蒸发速率，且蒸发速率波形相位滞后压力振荡波形接近180°。研究发现，增加振荡频率会加剧蒸发速率的振荡，但对蒸发速率平均值并无影响，蒸发过程中液滴直径变化趋势并无明显区别；燃烧室的高温环境在增加液滴蒸发速率、促进蒸发的同时，也会增强压力振荡对蒸发过程的影响效应，加剧液滴蒸发速率振荡；对于燃烧室平均压力和振幅，要将振幅占燃烧室平均压力的百分比作为影响因素之一来进行考察，百分比越大，液滴蒸发速率及表面温度振荡越剧烈。
Abstract:
An integrated experiment system used for single droplet evaporation in pressure oscillation environment was established. The experiments on the dynamic response characteristics of droplet evaporation in pressure oscillation environment were carried out and the effects of pressure oscillation on droplet evaporation process were analyzed. The unsteady evaporation model in pressure oscillation environment was established. On the basis of the model, influence rules of oscillation frequency, amplitude, chamber average pressure and temperature on evaporation characteristics were studied. The experimental results show that pressure oscillation environment can promote droplet evaporation, improve the evaporation rate of droplet, and the evaporation rate waveform phase lag pressure oscillation waveform is close to 180°. It is found in the study that the increase of evaporation rate, and also the variation tendency of droplet diameter during evaporation process has no distinct difference. While the high temperature environment increases the droplet evaporation rate, the influential effect of pressure oscillation on evaporation process is enhanced. As for chamber average pressure and amplitude, the percentage of the amplitude of chamber average pressure should be regarded as one of the influence factors. The percentage is greater, the oscillation of droplet evaporation rate and surface temperature is more severe.

参考文献/References:

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备注/Memo

收稿日期：2015-01-12；修回日期：2015-03-20 基金项目：国家自然科学青年基金（51206185） 作者简介：尹婷（1990—），女，硕士研究生，研究领域为液体火箭发动机

更新日期/Last Update: 1900-01-01