CAJ | 학술논문

在研究国内外现有空气导管泄漏探测系统的基础上，搭建了管道泄漏探测试验台，并结合FLUENT 三维泄漏流场的数值模拟，研究了不同导流洞大小、绝热层厚度及泄漏位置情况对泄漏探测性能的影响。试验结果与 FLUENT 计算结果表明：绝热层导流洞孔径及绝热层厚度的增大均能一定程度地增强感温线捕捉泄漏信号的效果；泄漏位置也会影响探测性能。给出了小孔泄漏流量的计算方法。研究结论可为国内飞机空气导管的相关研究工作提供参考。
재연구국내외현유공기도관설루탐측계통적기출상，탑건료관도설루탐측시험태，병결합FLUENT 삼유설루류장적수치모의，연구료불동도류동대소、절열층후도급설루위치정황대설루탐측성능적영향。시험결과여 FLUENT 계산결과표명：절열층도류동공경급절열층후도적증대균능일정정도지증강감온선포착설루신호적효과；설루위치야회영향탐측성능。급출료소공설루류량적계산방법。연구결론가위국내비궤공기도관적상관연구공작제공삼고。
Based on the study of the duct overheat detector of commercial and domestic aircraft in existing combined with the three-dimension flow field simulation of the leakage by FLUENT,the overheat detection experimental platform was built,the influences of the deflector size,thickness of the insulation and the leakage position on the detection performance were investigated by experiments.By analyzing the test results and FLUENT results,it is found that,the increasing of the deflector size and the insulation thickness will both increase the ability to capture leaking signals;the leakage position will affect the detection performance too,at the same time,the computing method of flow rate of eye-let leak is deriveed.The conclusion can provide technical reference for the related work upon ducts of domestic aircraft.