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航空发动机进气试验台畸变数值模拟研究

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为了实现对发动机吸入高温燃气现象进行模拟,本文介绍了航空发动机进气温度畸变模拟装置,主要从设备原理、设备组成、设备仿真验证等方面进行说明,通过数值模拟手段对模拟装置的指标进行验证,验证了该装置主、辅喷口在不同流量、温度下,气动参数测量截面(aerodynamic interface plane,AIP)温度分布以及温度畸变强度等指标,主喷口在喷射热流温度 550 K、流量 20 kg/s下,温度畸变强度可达 24.29%;辅助喷口在喷射热流温度 450 K、流量 20 kg/s下,温度畸变强度可达 18.06%,从而对不同喷口位置下AIP截面高温区分布变化进行了验证.通过改变管路喷射流量速率可改变AIP截面的温升速率,证明了该温度畸变模拟装置具有一定的温度畸变指标实现能力和可调节性,可实现对外场现象的复现.
A numerical simulation study on the inlet distortion of aeroengine test rig
In order to realize the simulation of high-temperature gas intake from the external field of an engine,this paper introduces the aero-engine intake temperature distortion simulation device,mainly from the equipment principle,equipment composition,equipment simulation and verification and other aspects,verifying the simulation device indicators by means of numerical simulation,including the main and auxiliary nozzles under different flow and temperature,temperature distribution of aerodynamic interface plane(AIP)section,temperature distortion intensity and other indicators.The temperature distortion intensity of the main nozzle is up to 24.29%at the injection heat flow of 550 K,20 kg/s.The temperature distortion intensity of the auxiliary nozzle is up to 18.06%at the auxiliary nozzle under the condition of 20 kg/s,450 K,which verifies the temperature distribution in the high temperature region of the AIP section under different nozzle locations.The temperature rise rate of AIP cross section can be changed by changing the pipe injection flow rate.It is proved that the temperature distortion simulator has certain ability to realize the temperature distortion index with adjustability,which can reproduce the external field phenomenon.

numerical simulationaero engineadjustable test benchinlet distortiontemperature distortion intensitytemperature rise ratefinite element analysisstress calculation

佟尧、刘旭峰、刘潇

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中国航发沈阳发动机研究所,辽宁 沈阳 110015

哈尔滨工程大学 动力与能源工程学院,黑龙江 哈尔滨 150001

数值模拟 航空发动机 可调试验台 进气畸变 温度畸变强度 温升率 有限元分析 应力计算

2024

应用科技
哈尔滨工程大学

应用科技

CSTPCD
影响因子:0.693
ISSN:1009-671X
年,卷(期):2024.51(1)
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