涡轴发动机外部管路防火试验传热仿真方法研究  

Research on Heat Transfer Simulation Method for Fire Test of External Pipeline of Turboshaft Engine

作　　者：赵尊盛 吴楠 邓维 谢荣华 ZHAO Zunsheng;WU Nan;DENG Wei;XIE Ronghua(Hunan Power Machinery Research Institute,China Aviation Development Corporation,Zhuzhou Hunan 412002)

机构地区：[1]中国航发湖南动力机械研究所,湖南株洲412002

出　　处：《中国科技纵横》2023年第1期97-100,共4页China Science & Technology Overview

摘　　要：防火试验是航空发动机适航取证的重要试验,但目前缺乏相应的传热仿真方法,前期设计缺乏理论基础,导致试验通过率不高,因此需研究针对防火试验条件的零件传热仿真分析方法.本文解读国际标准ISO2685,根据火焰热流标定要求,分析得出了火焰对零件的换热系数,获得了火焰换热边界条件;基于ANSYS软件研究了一维流体与三维固体耦合换热分析方法,以涡轴发动机两个典型滑油管路为例,完成了防火试验5min的传热仿真模拟,获得了试验管路(含内部滑油)在火焰加热条件下的瞬态温度变化及分布,为管路结构设计及封严选型提供支持.本文研究的防火传热仿真分析方法工程性较强,具有普适性,可用于航空发动机各类防火试验件的传热仿真.Fire test is an important test for aero-engine airworthiness certification.However,there is currently a lack of corresponding heat transfer simulation methods and a lack of theoretical basis for early design,resulting in a low test pass rate.Therefore,it is necessary to study the heat transfer simulation analysis of parts for fire test conditions.method.This paper firstly interprets the international standard ISO2685.According to the flame heat flow calibration requirements,the heat transfer coefficient of the flame to the parts is analyzed and obtained,and the flame heat transfer boundary conditions are obtained.Secondly,based on ANSYS software,the coupled heat transfer analysis of one-dimensional fluid and threedimensional solid is studied.Method,finally,taking two typical oil pipelines of turboshaft engine as an example,the heat transfer simulation simulation of fire test for 5 minutes was completed,and the transient temperature change of the test pipeline(including internal oil)under the condition of flame heating was obtained.And distribution,to provide support for pipeline structure design and sealing selection.The fire heat transfer simulation analysis method studied in this paper has strong engineering and universality,and can be used for heat transfer simulation of various fire test specimens of aero-engine.

关 键 词：航空发动机 外部管路 防火试验 传热 仿真 

分 类 号：V235.12[航空宇航科学与技术—航空宇航推进理论与工程]