摘要
以真空系统中与真空压力传感器连接的气管为研究对象,建立了管路的二维轴对称模型,提出适当的边界条件,利用有限体积法仿真得到了压力波动结果,与相同参数条件的试验结果较为一致,验证了模型的正确性。真空管路中压力波动是短暂的,但峰值大于大气压,会对压力传感器造成冲击。本文提出的建模方法为进一步研究真空系统的压力波动提供了技术参考。
A two-dimensional axisymmetric model of the gas pipe connected with the vacuum pressure sensor in the vacuum system is established,and the appropriate boundary conditions are proposed.The pressure fluctuation results are simulated by using the finite volume method,which are consistent with the test results under the same parameter conditions,and the correctness of the model is verified.The pressure fluctuation in vacuum pipeline is transient,but the peak value is larger than atmospheric pressure,which will impact the pressure sensor.The modeling method proposed in this paper provides a technical reference for further study of pressure fluctuation in vacuum system.
作者
朱冬
詹长书
ZHU Dong;ZHAN Changshu(School of Traffic and Transportation,Northeast Forestry University,Harbin,Heilong jiang Province,150040 China)
出处
《科技创新导报》
2020年第28期94-97,共4页
Science and Technology Innovation Herald
基金
中央高校基本科研业务费《车辆系统控制与诊断算法研究》(项目编号:2572018BG02)。
关键词
真空系统
压力波动
气动管路
模型
Vacuum system
Pressure fluctuation
Pneumatic pipeline
Model
