摘要
甩油盘作为涡轮动力模拟器(TPS)的重要零件,能有效地促进模拟器内循环系统润滑油的回流,提高轴承的润滑性并降低系统温升,为整机安全可靠运行提供了基础性保障。为了解决TPS内循环系统润滑油的回流问题,对TPS甩油盘及其内部循环流道进行了研究。首先,确定了涡轮动力模拟器轴承发热量及散热系数随转速的变化、甩油盘内部流体控制方程和边界条件;然后,构建了一类TPS甩油盘及其内部循环流道的完整内循环热流模型,并对比了轴承处温度仿真结果与实验结果以确保模型的合理性;最后,数值仿真得到了不同转速下内部循环流道的温度场、压力场和速度场。研究结果表明:转速增加能显著引发系统内最高温度上升,甩油盘作用下的内循环流场温度变化较为平稳,典型工况条件下仿真与实验得到的最高温度相对误差最大为12.3%,表明了热流模型的合理性。研究结果对于指导TPS甩油盘结构设计和提高整机运行安全稳定性具有重要的价值。
As an important part of the turbine power simulator(TPS),the sling-oil retainer can effectively promote the return of lubricating oil in the internal circulation system of the simulator,improve the lubricity of the bearing and reduce the temperature rise of the system,which provides a basic guarantee for the safety and reliability of the whole TPS.In order to address the issue of the return of lubricating oil in the internal circulation system of the TPS,the research was conducted on the TPS sling-oil retainer and its internal channel.Firstly,bearing heat generation and heat dissipation coefficients with rotational speed,fluid governing equation and its boundary conditions were defined.Then,a complete internal circulation heat flow model of a type of TPS sling-oil retainer and its internal channel was constructed,and the temperature at the bearing of the simulation results was compared with that of the experimental results to ensure the rationality of the model.Finally,the temperature field,pressure field and velocity field of the internal circulation channel at different speeds were obtained by solving the heat flow model.The research results show that the increasing speed can significantly enhance the maximum temperature of the system,and the temperature of the internal flow field is relatively stable due to the dynamic effect of the sling-oil retainer.Under the typical working conditions,the maximum relative error of the temperature obtained by simulation and experiment is 12.3%,which shows the rationality of the heat flow model.The research results are of important value for guiding the structural design of the sling-oil retainer and improving the safety and stability of the whole TPS system.
作者
吴福章
段雪峰
刘砚
黎旭康
张国渊
WU Fuzhang;DUAN Xuefeng;LIU Yan;LI Xukang;ZHANG Guoyuan(China Aerodynamics Research and Development Center,Mianyang 621000,China;School of Mechano-Electronic Engineering,Xidian University,Xi'an 710071,China)
出处
《机电工程》
CAS
北大核心
2024年第7期1285-1292,1308,共9页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(52075407)。
关键词
涡轮动力模拟器甩油盘
热流模型
流场特性
温度场
turbine powered simulator(TPS)sling-oil retainer
heat flow model
flow field characteristics
temperature field
