| 绕流涡街及涡街流量计流场数值仿真 |
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| 引用本文： | 李丽,施志辉,赵金龙.绕流涡街及涡街流量计流场数值仿真[J].大连交通大学学报,2014,35(6):32-35. |
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| 作者姓名： | 李丽 施志辉 赵金龙 |
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| 作者单位： | 1. 大连交通大学机械工程学院,辽宁大连,116028
2. 呼和浩特市铁路局,内蒙古乌海,016000 |
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| 基金项目： | 教育部留学回国人员科研启动基金 |
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| 摘 要： | 基于涡街理论,分别对圆形阻流体、正方形阻流体和三角形阻流体所形成的涡街场进行仿真研究,同时对三种阻流体对应的涡街流量计进行数值仿真,分析流量计中应变片对三种阻流体流场压力和速度的影响.结果表明,应变片改变了流场振荡的频率,三角形涡街流量计的压力损失最小.
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| 关 键 词： | 涡街流场 涡街流量计 三种阻流体 数值分析 |
Numerical Simulations of Vortex Flow Field and Vortex Flow Meter |
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| LI Li,SHI Zhihui,ZHAO Jinlong.Numerical Simulations of Vortex Flow Field and Vortex Flow Meter[J].Journal of Dalian Jiaotong University,2014,35(6):32-35. |
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| Authors: | LI Li SHI Zhihui ZHAO Jinlong |
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| Institution: | LI Li, SHI Zhihui , ZHAO Jinlong( 1. School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China; 2. Huhehaote Railway Bureau, Wuhai 016000, China) |
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| Abstract: | Based on the theory of vortex,the vortex fields of circular,square and triangle resistance are studied by numerical simulations,and the corresponding vortex flowmeter of three kinds of resistances are also discussed. The influences of piezoelectric film on the pressure and velocity in the flow field are analyzed,and the results show that the piezoelectric film changes the oscillation frequency,and the pressure loss caused by the triangle resistance is the smallest in the vortex flowmeter. |
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| Keywords: | vortex flow field vortex flowmeter three kinds of resistances numerical simulation |
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