摘要
在液氢加注系统中,管道振动会显著影响液氢加注效率,甚至会威胁到加注过程的安全性。为了避免这种现象,确保加注过程的安全的进行,建立加注管路的三维模型,采用数值仿真的方法,从不同入口速度、振幅、频率等方面,利用CFD软件模拟并分析振动对液氢管内流动沸腾压降的影响。利用快速傅里叶变换(FFT)分析方法,得到液氢管内流动沸腾压降波动与管道振动之间的关系。研究结果表明:对液氢在输运管内流动压降影响最大的是频率,而对压降波动影响最大的是入口速度。
In the liquid hydrogen filling system,pipeline vibration will significantly affect the filling efficiency of liquid hydrogen and even threaten the safety of the filling process.To avoid this phenomenon and ensure the safety of the filling process,a three-dimensional model of the filling pipeline with liquid hydrogen was established to analyze the influence of vibration on the flow boiling pressure drop under different inlet speeds,amplitudes and frequencies with numerical simulation by CFD software.The relationship between the flow boiling pressure fluctuation and the vibration of the pipeline was obtained by Fast Fourier Transform(FFT)analysis.The results show that the main factor affecting the magnitude of pressure drop of liquid hydrogen boiling flow in the pipeline is frequency,and the main factor affecting the pressure drop fluctuation is the inlet velocity.
作者
商燕
常华伟
郑尧
陈建业
舒水明
SHANG Yan;CHANG Huawei;ZHENG Yao;CHEN Jianye;SHU Shuiming(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;State Key Laboratory of Technologies in Space Cryogenic Propellants,Beijing 100028,China)
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第9期2337-2343,共7页
Journal of Central South University:Science and Technology
基金
航天低温推进剂技术国家重点实验室基金课题(SKLTSCP1510)~~
关键词
液氢
振动
压降
数值模拟
快速傅里叶变换
liquid hydrogen
vibration
pressure drop
numerical simulation
FFT
