计量学报2025，Vol.46Issue(12)：1775-1782,8.DOI:10.3969/j.issn.1000-1158.2025.12.10
基于双向流固耦合的介质对加氢机用科氏质量流量计测量性能影响
Study on the Influence of Medium Based on Two-way Fluid-structure Coupling on Measurement Performance of Coriolis Mass Flowmeter for Hydrogen Dispenser
摘要
Abstract
In order to study the performance difference of Coriolis mass flowmeter for hydrogen dispenser in different media,considering the common influence of physical property changes on fluid domain and solid domain and the change of modal frequency,the real gas model based on Helmholtz free energy is selected,and the water,air and hydrogen media are used.The two-way fluid-structure coupling calculation of Coriolis mass flowmeter for hydrogen dispenser with diameter DN2 is carried out.Based on the change of Coriolis force in the vibrating tube,the influence of physical property difference on the measurement performance of the flowmeter is studied,and the influence of pressure change on the performance of the flowmeter under hydrogen and air medium is compared and analyzed.The results show that:1)There is a pipeline asymmetry caused by the change of Coriolis force among different media,and the asymmetry decreases with the increase of mass flow rate;the time difference of liquid is larger than that of gas at small flow rate.2)The influence of pressure rise on the time difference of hydrogen medium is less than that of air,and the influence of solid stiffness change on the time difference is less than that of fluid density.When calibrating the Coriolis mass flowmeter for hydrogen dispenser with gas medium,the density of calibration gas should be consistent with the working condition as far as possible,and the difference of flow velocity between media should be considered.关键词
流量计量/科氏质量流量计/流固耦合/介质差异/真实气体模型/加氢机Key words
flow easurement/Coriolis mass flowmeter/fluid-structure coupling/medium difference/real gas model/Hydrogen dispenser分类
通用工业技术引用本文复制引用
孙学梁,李春辉,黄震威,谢代梁..基于双向流固耦合的介质对加氢机用科氏质量流量计测量性能影响[J].计量学报,2025,46(12):1775-1782,8.基金项目
中国计量科学研究院基本科研业务费(26-AKYZD2107-1) （26-AKYZD2107-1）
