摘要
把研究物体在流场中振动时的受力和运动特性的非线性振子模型，推广到转子密封系统非线性动力学问题的研究中，突出了小间隙中非定常流对转子运动的影响，分析了反旋流抑制转子不平衡响应和密封流体激振的机理。对某转子密封系统的计算及其与实验数据的对比，证实了本文方法的有效性，为在工程实际中推广反旋流技术提供了一些理论依据。
A nonlinear oscillator model,which is usually used to study the dynamic characteristics of structures in flow,has been applied to the nonlinear dynamic characteristics of rotor/seal system.Emphasis is put on the effects of the nonlinear unsteady flow in the small clearance on the rotor dynamic characteristics.The mechanism of anti-swirl arrangements for suppressing rotor/seal instability is considered.The comparison between the theoretical and experimental results of a rotor/seal system is in a reasonable agreement and shows that this method provides a theoretical basis for application of anti-swirl technique to engineering practices.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
1999年第3期293-296,共4页
Journal of Aerospace Power
基金
国家"九五"国防预研资助
关键词
转子密封系统
非线性振动
数据模拟
Rotors Sealing Nonlinear vibration Numerical simulation
