摘要
小孔节流是空气静压导轨中常见的节流方式,为了研究空气静压导轨气膜压力分布问题,研制了一种气体止推轴承气膜压力分布测试试验台。以小孔节流为例。基于空气静压导轨气膜压力递减规律,将气膜沿长度方向划分为压力驱动区和牛顿摩擦区。通过Fluent仿真气膜支撑区气体流态并计算其流速和压力,得到的实验结果与气体压力分布的数值分析结果吻合。得出了相关结论:气膜沿长度方向分为压力驱动区和牛顿摩擦区。通过实验验证压力分区理论的有效性。
Orifice throttle is a common way of throttling in the air static pressure guide rail, In order to study the gas fihn pressure distribution of the air static pressure guide rail, a gas thrust bearing gas film pressure distribution test bench was developed. In this paper, the orifice throttling is an example, based on the law of the gas film pressure decline, the gas film is divided into the pressure driven area and the Newton friction area. The gas flow pattern in the gas film support area is simulated by Fluent and the flow rate and pressure are calculated. The experimental results are in good agreement with the numerical analysis of the gas pressure distribution. It is concluded that the gas film is divided into the pressure driven area and the Newton friction zone along the length of the gas film, which verifies the validity of the pressure partition theory.
出处
《机械强度》
CAS
CSCD
北大核心
2017年第3期572-578,共7页
Journal of Mechanical Strength
基金
国家自然科学基金项目(51305185)资助~~
