摘要
瞬态压力测量中传压管道的引入将会导致管道共振频率的存在,该共振频率是否会对压力测量产生影响是值得探讨的。本文从考虑不稳定层流的耗散性管道模型出发,根据实际应用情况对传压管道的末端约束条件进行简化,基于对压力传递函数的分析进行了传压管道频响特性的数值模拟,具体考虑了传压管道的几何参数和压力传递介质对传压管道频率特性的影响。在压力校准装置上进行实验,实验结论验证了理论分析的结果。
The introductio n of pressure transmission line in the measurement of transient pressure will result in the existence of resonant frequency and whether the resonant frequency will affect pressure measurement or not is the problem to be discussed. Start with the dissipation model of the pressure transmission line; simplify the restriction condition of the end of the transmission line according to the applications in reality; numerical simulation to the characteristics of frequency response of pressure transmission line is carried out, put the emphasis on the effects of the frequency response characteristics of pressure transmission line caused by geometrical parameters and pressure transmitting medium is analyzed. At the end of the paper, experiment was carried out with pressure calibration device and the results validate the conclusion to be correct.
出处
《电子测量技术》
2007年第2期21-24,共4页
Electronic Measurement Technology
关键词
瞬态压力
传压管道
频率响应
transient pressure
pressure transmission line
frequency response
