摘要
以动环、静环和液膜三者为研究对象,建立了低温液氧介质T型槽密封的三维实体模型。利用流体力学计算软件FLUENT对模型进行数值模拟,得到了密封端面液膜流场的压力场分布、剪切力分布和液膜动静环两侧温度场分布,分析了主轴转速、密封介质粘度和压差对开启力、泄漏量和液膜两侧温升的影响。结果表明:动环端面开槽可减少粘性摩擦热,液膜静环侧温升高于液膜动环侧温升,开启力和泄漏量与转速和压差的变化成正比,主轴转速的提高和密封介质粘度的增大都会提高端面温升,压差对温度变化的影响较小。
Using the dynamic ring, static ring and liquid film as the research object, establishes the 3D solid model of the cryogenic liquid oxygen medium T-groove seal. Numerical simulate is done by the fluid mechanics calculate software FLUENT, obtaining the pressure distribution, shear stress distribution, temperature distribution on both sides of liquid film, temperature distribution of all the model, and analyzes the effect of spindle speed, seal medium viscosity and pressure difference on opening force, leakage and temperature rise on both sides of liquid film The results show that： the slot on dynamic ring can reduce the viscous friction heat, the temperature rise on the static ring side of the liquid film is higher than the other side, the increase of spindle speed and sealing mediitm viscosity will increase the surface temperature rise.
出处
《机械设计与制造》
北大核心
2014年第11期150-154,共5页
Machinery Design & Manufacture
基金
国家973项目的资助(2012CB026000)
关键词
低温液氧
T型槽
数值模拟
压力场
温度场
Cryogenic Liquid Oxygen
T-Groove
Numerical Simulation
Pressure Field
Temperature Field
