Characteristics of constant volume and flow releasing of high-pressure gas

被引：0
|
作者：
Zhao F. [1 ]
Wang H. [1 ]
Ren Z. [1 ]
Xu D. [1 ]
Shi Y. [1 ]
机构：
[1] Facility Design and instrumentation institute, China Aerodynamics Research and Development Center, Mianyang
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2021年 / 52卷 / 04期
关键词：
Constant flow; Constant volume; High pressure; Ideal gas; Real gas; Releasing process; Runge-Kutta; Virial equation;
D O I：
10.11817/j.issn.1672-7207.2021.04.022
中图分类号：
学科分类号：
摘要：
Compared with the real gas model, the ideal gas model under high pressure has certain limitations. In order to compare and analyze the deviation between the two models, mathematical model of real gas releasing process for the system of the high-pressure gas tank was set up based on the compression factor, Virial equation and the gas dynamics equation. On this basis, the time required, the temperature and pressure changes of the system from various initial pressure to 6 MPa respectively were studied through the Runge-Kutta method, and some of the calculated results were compared with the experimental results. The results show that the temperature and pressure under real gas effect decrease faster in the releasing process; The higher the gas source pressure, the more pronounced the real gas effect. Moreover, compared with the ideal gas model, the simulation value of the real gas model is closer to the experimental results. The related researches provide references for the study of high-pressure gas characteristics, the design of high-pressure gas tank volume, and the change of temperature and pressure in the releasing process. © 2021, Central South University Press. All right reserved.
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页码：1261 / 1267
页数：6
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