摘要
为了揭示旋涡进动效应所产生的涡旋低压流场演化规律,从而为旋进旋涡流量计压力传感器选型及安装位置提供依据,对DN50某型号旋进旋涡流量计内全三维非定常流场进行数值分析。经过实验验证,所采用的定常-非定常两步走的数值求解策略能准确获得低压区压力脉动频率特性,所得仪表系数与实验值吻合良好。数值模拟结果完整呈现了旋涡进动效应影响下沿轴向及周向压力脉动规律。为了保证和扩大量程比,给出压力传感器低压区的灵敏度、传感器尺寸及位置的选择依据。
In order to reveal the evolution of low pressure flow field due to the vortex precession effect,then provide theoretical foundation for selecting the pressure sensor and it’s install location,detailed 3 D unsteady simulation was carried out for a DN50 swirl flowmeter.The experiment results show that:the steady-unsteady two steps numerical method can accurately capture the pressure fluctuation frequency,the meter factor obtained by numerical simulation is agree well with the experimental value.The numerical results completely show the pressure fluctuation along the axial direction and circumferential direction under the vortex precession effect.Selecting rule for the sensitivity,size and install location of the pressure senor were given.
作者
刘春哲
张涛
田辉
曼茂立
赵海贤
孙占刚
杨博
豆广东
LIU Chunzhe;ZHANG Tao;TIAN Hui;MAN Maoli;ZHAO Haixian;SUN Zhangang;YANG Bo;DOU Guangdong(Department of Mechanical Engineering,Chengde Petroleum College,Chengde Hebei 067000,China;Hebei Institute of Mechanical and Electroninc Technology,Xingtai Hebei 054000,China;Hebei Instrument and Meter Industry Technology Research Institute,Chengde Hebei 067000,China;Science and Technology Office,Chengde Petroleum College,Chengde Hebei 067000,China;Division of Recruitment and Employment,Chengde Petroleum College,Chengde Hebei 067000,China)
出处
《机床与液压》
北大核心
2020年第10期185-188,121,共5页
Machine Tool & Hydraulics
基金
河北省自然科学基金项目(E2016411008)
河北省高等学校科学技术研究重点项目(ZD2019122)。
关键词
旋涡进动
数值模拟
压力脉动
非定常
压力传感器
Vortex precession
Numerical simulation
Pressure fluctuation
Unsteady
Pressure senor
