水平式金属管浮子流量计的仿真与实验  

Simulation and Experiment on Horizontal Metal Tube Rotameter

作　　者：叶佳敏[1] 张涛[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《天津大学学报》2006年第9期1099-1104,共6页Journal of Tianjin University(Science and Technology)

基　　金：天津市自然科学基金(023603511).

摘　　要：利用基于计算流体力学的流量传感器设计方法实现了对适合安装于水平管道的特殊结构的金属管浮子流量计三维湍流流场的数值仿真研究．流场仿真所需的模型采用GAMBIT软件建立,通过FLUNT软件进行仿真,仿真过程中利用受力平衡来控制计算精度．数值仿真结果和物理实验结果比较,浮子受力平衡误差绝对值为2．01%时,流量误差绝对值为0．70%,证实了仿真结果的准确性．同时,利用流场仿真信息对流量传感器结构做了进一步的优化,解决了水平式金属管浮子流量计在大流量下的浮子振动问题．Numerical simulation study of the 3D turbulence flow field of metal tube rotameter with special structure fixed on the level piping is carried out by the design method for flow sensor based on the computational fluid dynamics. The model of simulation is established by GAMBIT software, the flow field is simulated with FLUNT software, and the computational precision is controlled through force balance in the process of simulation. Comparison of results between simulation and experiment shows that, when the error absolute value of floater＇ force balance is 2.01%, the error absolute value of flow rate is 0. 70%, which verifies the accuracy of simulation results. Furthermore, the simulating flow field of metal tube rotameter is used to optimize the flow sensor structure, and the problem of horizontal metal tube rotameter that the floater vibrates in high speed is solved.

关 键 词：金属管浮子流量计 水平式安装 数值仿真 流量传感器设计方法 结构优化 

分 类 号：TH814[机械工程—仪器科学与技术]