刷式密封摩擦生热温度场数值计算及试验

吴施志; 江平; 力宁; 潘君; 王智加

doi:10.13224/j.cnki.jasp.2019.04.001

刷式密封摩擦生热温度场数值计算及试验

doi: 10.13224/j.cnki.jasp.2019.04.001

1.
中国航空发动机集团有限公司湖南动力机械研究所，湖南株洲 412002
2.
中国航空发动机集团有限公司湖南动力机械研究所，湖南株洲 412002；中国航空发动机集团有限公司直升机传动技术重点实验室，湖南株洲 412002

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出版历程
- 收稿日期: 2018-08-03
- 刊出日期: 2019-04-28

Numerical calculation and experiment on temperature field offriction heat generation of brush seal

摘要

摘要: 在摩擦热热源条件下建立了CFD多孔介质数值计算模型，对某型航空发动机刷式密封摩擦生热温度场进行计算分析，开展了刷式密封装置全工况条件下摩擦生热试验研究，采用红外成像技术实现了刷式密封动态温度场实时监测。根据试验结果对摩擦生热温度场计算方法进行了修正，引入了刚度修正系数，并对刚度修正系数进行了确定及验证。总结出经过试验验证的航空发动机刷式密封摩擦生热温度场计算分析及试验方法，结果表明：与全工况试验结果相比，计算误差值从48.15%减少到10.67%。
- 刷式密封 /
- 摩擦热 /
- 热流密度 /
- 刷丝刚度 /
- 红外成像
Abstract: A numerical calculation model with CFD porous media with friction heat as heat source was built. The temperature field of friction heat generation of brush seal used in a specific aero engine was analyzed. An experimental study of friction heat generation in brush seal with simulating operating conditions was conducted. A kind of technology using infrared camera was developed to get the real-time dynamic temperature field of brush seal. Experimental data was used to analyze and improve the numerical calculation model of heat generation. Based on these results, a stiffness correction factor was introduced and validated. During this study, a kind of calculation and experimental method validated by the experimental data was summarized, and could be used to analyze the temperature field of heat generation of brush seal in aero engine. Result showed that, by utilizing such methods, the error between calculation result and experimental data from simulated real operating conditions reduced from 48.15% to 10.67%.
- brush seal /
- friction heat /
- heat flux /
- bristle stiffness /
- infrared imaging

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参考文献(18)

[1]	郭霖,康宁.低泄漏高寿命刷式封严的实验研究［J］.航空动力学报,2003,18(4):485-487.GUO Lin,KANG Ning.Experimental study of low leakage and high endurance brush seals［J］.Journal of Aerospace Power,2003,18(4):485-487.(in Chinese)
[2]	谢晓俊,康宁.低泄漏高寿命刷式封严的数值计算［J］.航空动力学报,2003,18(6):824-826.XIE Xiaojun,KANG Ning.Numerical computation of low leakage and high endurance brush seal［J］.Journal of Aerospace Power,2003,18(6):824-826.(in Chinese)
[3]	王之栎,王宗根.航空发动机刷密封技术发展与展望［J］.润滑与密封,2005,171(5):203-205,209.WANG Zhili,WANG Zonggen.Development and prospect of brush seal in aero-engine［J］.Lubrication Engineering,2005,171(5):203-205,209.(in Chinese)
[4]	邱波,李军,丰镇平.考虑刷丝变形的刷式密封摩擦热效应研究［J］.工程热物理学报,2013,33(1):2030-2034.QIU Bo,LI Jun,FENG Zhenping.Investigations on frictional heat generation of brush seals with consideration of bristle deflections［J］.Journal of Engineering Thermophysics,2013,33(1):2030-2034.(in Chinese)
[5]	邱波,李军,陈春新,等.基于CFD和FEM方法的刷式密封传热特性研究［J］.工程热物理学报,2012,32(12):2067-2071.QIU Bo,LI Jun,CHEN Chunxin,et al.Investigations on the heat transfer characteristics of brush seals based on computational fluid dynamics and finite element analysis［J］.Journal of Engineering Thermophysics,2012,32(12):2067-2071.(in Chinese)
[6]	RUGGIERO E,ALLEN J,DEMIROGLU M,et al.Heat generation characteristics of a Kevlar fiber brush seal［R］.AIAA-2007-5738,2007.
[7]	曹广州,吉洪湖,纪国剑,等.刷式封严初期使用特性的实验和数值研究［J］.推进技术,2010,31(4):478-482,489.CAO Guangzhou,JI Honghu,JI Guojian.Experimental and numerical study on the leakage characteristics of brush seals at the early stage of operating［J］.Journal of Propulsion Technology,2010,31(4):478-482,489.(in Chinese)
[8]	阳虹,杨建道,李军,等.刷式密封技术及其在汽轮机优化设计中的应用［J］.动力工程,2009,29(8):737-742,764.YANG Hong,YANG Jiandao,LI Jun,et al.Research of the brush seal technique and its application in steam turbine optimization design［J］.Journal of Power Engineering,2009,29(8):737-742,764.(in Chinese)
[9]	邱波,李军.刷式密封流动与换热及力学特性的研究进展［J］.热力透平,2013,42(3):141-149. QIU Bo，LI Jun.A review of flow and heat transfer,mechanical characteristics of brush seals［J］.Thermal Turbine,2013,42(3):141-149.(in Chinese)
[10]	HENDRICKS R C,SCHLUMBERGER S,BRAUN M J,et al.A bulk flow model of a brush seal system［R］.ASME Paper 91-GT-325,1991.
[11]	DOGU Y,AKSIT M F.Brush seal temperature distribution analysis［J］.Journal of Engineering for Gas Turbines and Power,2006,128(3):599-609.
[12]	CHEW J W,LAPWORTH B L,MILLENER P J.Mathematical modeling of brush seals［J］.International Journal of Heat Fluid Flow,1995,16(6):493-500.
[13]	刘占生,叶建槐.刷式密封接触动力学特性研究［J］.航空动力学报,2002,17(5):635-640.LIU Zhansheng,YE Jianhuai.Research on structural dynamic characteristics of brush seals［J］.Journal of Aerospace Power,2002,17(5):635-640.(in Chinese)
[14]	陈春新,李军,丰镇平.刷式密封刷丝束与转子接触力的数值研究［J］.西安交通大学学报,2010,44(7):23-27.CHEN Chunxin,LI Jun,FENG Zhenping.Numerical investigation into bristle-rotor contact force of brush seals［J］.Journal of Xi’an Jiaotong University,2010,44(7):23-27.(in Chinese)
[15]	黄学民,史伟,王洪铭.刷式密封中泄漏流动的多孔介质数值模型［J］.航空动力学报,2000,15(1):55-58.HUANG Xuemin,SHI Wei,WANG Hongming.Porous medium leakage flow model of brush seal［J］.Journal of Aerospace Power,2000,15(1):55-58.(in Chinese)
[16]	邱波,李军.刷式密封传热特性研究［J］.西安交通大学学报,2011,45(9):94-100.QIU Bo，LI Jun.Investigation on the heat transfer characteristics of brush seals［J］.Journal of Xi’an Jiaotong University,2011,45(9):94-100.(in Chinese)
[17]	DEMIROGLU M,TICHY J A.An investigation of heat generation characteristics of brush seals［R］.ASME Paper GT2007-28043,2007.
[18]	力宁,彭最花,贺玲,等.航空发动机高温高速密封试验台研制［J］.润滑与密封,2014,39(6):121-123.LI Ning,PENG Zuihua,HE Ling,et al.Development of high-temperature and high-speed seal test rig of aeroengine［J］.Lubrication Engineering,2014,39(6):121-123.(in Chinese)