机匣结构内部辐射加热仿真与试验对比研究  

Contrastive study of simulation and test for aero-engine casing structure internal radiant heating

作　　者：姚迟森 蒋军亮[1] 张肖肖[1] YAO Chisen;JIANG Junliang;ZHANG Xiaoxiao(China Aircraft Strength Research Institute,710065 Xi'an,China)

机构地区：[1]中国飞机强度研究所,西安710065

出　　处：《应用力学学报》2025年第2期306-312,共7页Chinese Journal of Applied Mechanics

基　　金：中国航发四川燃气涡轮研究院外委课题资助项目(No.WDZC-2021-2-3)。

摘　　要：针对当前航空发动机机匣热试验仿真计算结果与试验结果难以对比关联的问题,根据机匣典型结构纯热试验设计开展机匣内部辐射加热仿真计算,建立了一种同时考虑石英灯丝电阻率与发射率变化规律的灯丝温度估算方法,并根据试验控制电压估算了3个工况下灯丝的时变温度,从而将仿真计算与实际试验相关联。同时根据试验装配情况,提出了一种针对灯管交错排布时水冷电极遮挡效应的模型修正方法。仿真计算与试验结果的相对误差在8%以内,说明采用该建模与修正方法能够提高实际试验与仿真计算间的关联性,可进一步指导机匣结构试验设计与模型优化。Aiming at the difficulty in comparing the results of simulation and those of actual thermal test for aero-engine casing,internal heating model was established based on the thermal test design.A temperature estimating method considering both the resistivity and emissivity of the tungsten filament of quartz lamp was proposed,and then the time-varying temperature of the filament under three testing conditions was calculated according to the control data,which thus related the simulation with the actual test.Based on the assembly of the test,modification was conducted to simulate blocking effect of the water-cooling electrodes when the quartz lamps are staggered.The deviation between the simulation and the actual test is within 8%,which shows that the modeling and modifying methods enhanced the relevance between the simulation and the actual test,and could be farther applied to guide the test design and simulation optimization of thermal tests for aero-engine casing.

关 键 词：热试验仿真 石英灯加热器 发动机机匣 辐射传热 内加热 

分 类 号：V216.4[航空宇航科学与技术—航空宇航推进理论与工程]