摘要
为考虑液氢的弱可压缩性,基于真实流体物性的PR方程,通过CFD仿真对高速液氢离心泵不同转速下空化断裂前的工况进行了数值模拟,对比分析了不可压缩流动和弱可压缩流动两种流动状态下的未空化高速离心液氢输送泵内流场分布、液氢泵扬程和效率等性能。研究结果表明,液氢工质的弱可压缩性不可忽略,将对泵内流场分布和能量耗散有显著影响,最终使泵的效率和扬程的降低。
Considering the weak compressibility of liquid hydrogen,CFD method based on PR equation was adopted to simulate the working conditions before cavitation fracture of high-speed liquid hydrogen centrifugal pump at different speeds,and flow field distribution,the head and the efficiency of non-cavitating high-speed centrifugal liquid hydrogen pump under two flow states were compared and analyzed.The results show that the weak compressibility of liquid hydrogen can not be ignored,which will have a significant impact on the flow field distribution and energy dissipation in the pump,and finally reduce the efficiency and head of pump.
作者
林心怡
张蓓乐
张明
赵永立
赖天伟
陈良
薛绒
Lin Xinyi;Zhang Beile;Zhang Ming;Zhao Yongli;Lai Tianwei;Chen Liang;Xue Rong(School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Aerospace System Engineering Shanghai,Shanghai 201109,China)
出处
《低温工程》
CAS
CSCD
北大核心
2022年第4期1-5,25,共6页
Cryogenics
基金
国家自然科学基金资助项目(51806162、51976150)
陕西高校青年创新团队资助项目。
关键词
离心工质泵
液氢
弱可压缩性
CFD
模拟
cryogenic centrifugal pump
liquid hydrogen
weak compressibility
CFD simulation
