CAJ | 학술논문

吞水试验是测试飞机在雨天飞行时发动机性能的基本手段。喷水系统是吞水试验中构造水滴及水雾状态的关键部件，在保证液态水含量的同时还要满足液滴粒径和液滴分布的要求。通过CFD软件对喷雾系统进行数值模拟，得到各种因素对喷雾粒径的影响。发动机慢车状态时，水滴呈聚合趋势；最大状态时，水滴呈破碎趋势。提出一种喷水环形式的喷水系统，并对采用喷水环结构形式的喷水系统进行建模和数值计算，探讨其对外流场以及粒径变化产生影响。
탄수시험시측시비궤재우천비행시발동궤성능적기본수단。분수계통시탄수시험중구조수적급수무상태적관건부건，재보증액태수함량적동시환요만족액적립경화액적분포적요구。통과CFD연건대분무계통진행수치모의，득도각충인소대분무립경적영향。발동궤만차상태시，수적정취합추세；최대상태시，수적정파쇄추세。제출일충분수배형식적분수계통，병대채용분수배결구형식적분수계통진행건모화수치계산，탐토기대외류장이급립경변화산생영향。
The test of engine water ingestion is the basic mean to verify the performance of the engine act-ing in rainy condition .The sprinkler system is the core part to form water droplets and the liquid water content,and the droplets size and distribution should meet the requirements .In order to obtain the influ-ence of various factors on the droplet size of spray ,CFD software is used to simulate the spray system .Wa-ter droplets size gets larger when the engine runs in the minimum state ,but it gets smaller when it comes to the maximum state .At last,one preliminary design of sprinkler system is presented .The influence of geometric shape has been considered during analyses with simulation of three dimensions .