多孔平衡式液氢流量计的流动特性研究  

Flow characteristics of perforated plate balanced liquid hydrogen flowmeter

作　　者：田一含 崔晨[1,2] 高诏诏 陈六彪 王俊杰[1,2] Tian Yihan;Cui Chen;Gao Zhaozhao;Chen Liubiao;Wang Junjie(Key Laboratory of Cryogenic Science and Technology,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Optical Physics and Engineering Technology,Qilu Zhongke,Jinan 250000,China)

机构地区：[1]中国科学院理化技术研究所低温科学与技术重点实验室,北京100190 [2]中国科学院大学,北京100049 [3]齐鲁中科光物理与工程技术研究院,济南250000

出　　处：《低温工程》2024年第2期8-14,77,共8页Cryogenics

基　　金：国家自然科学基金项目(No.12073058);中国科学院理化技术研究所所长基金项目(No.220422)。

摘　　要：设计并加工了一种具有流阻小、无运动部件的多孔平衡流量计,在使用初步实验数据验证建立的仿真模型准确性基础上,仿真分析了入口流速、液氢过冷度、内壁面粗糙度、入口气相含率对流出系数、压力损失系数和空化特性的影响。结果表明,在孔板结构和取压方式一定时,雷诺数决定了流体的流态和空化现象,过冷度影响了空化的发生条件,粗糙度影响了流体的摩擦阻力,气相含率影响了流体的密度。A perforated plate balanced flowmeter,featuring low flow resistance and no moving components,was designed and manufactured.Utilizing preliminary experimental data to validate the accuracy of the established simulation model,the calculations were conducted to assess the impact of inlet flow velocity,liquid hydrogen supercooling degree,internal wall roughness,and inlet gas phase content on the discharge coefficient,pressure loss coefficient,and cavitation characteristics.The results show that within specific perforated plate structures and pressure measurement techniques,the Reynolds number determines the fluid flow state and cavitation phenomenon,the supercooling affects the cavitation occurrence conditions,the roughness affects the fluid friction resistance,and the gas phase content affects the fluid density.

关 键 词：液氢 多孔平衡流量计 流动阻力特性 空化效应 

分 类 号：TB663[一般工业技术—制冷工程]