新型双向流量计流固参数特性仿真及试验  

Simulation and experimental study of fluid-solid characteristics of new-type bid bidirectional flowmeter

作　　者：梁前超[1] 邵梦麟[1] 闫东[1] 秦珩[2] 李华志[1] 

机构地区：[1]海军工程大学动力工程学院,武汉430033 [2]海军大连舰艇学院,辽宁大连116013

出　　处：《海军工程大学学报》2014年第6期47-50,共4页Journal of Naval University of Engineering

基　　金：湖北省自然科学基金资助项目(2010CDB01503)

摘　　要：导磁体小球的受力平衡特性直接影响到新型双向流量计的测量精度。为了研究导磁体小球在同轴环形轨道中运行的平衡性及流体密度和导磁体几何参数对其运动平衡性的影响,首先通过理论分析了同轴环面流道内导磁体小球在旋转轨道内的运动平衡性条件并建立了流固耦合模型,然后采用Ansys workbench中的最优化算法根据小球平衡条件进行小球运动平衡特性仿真,再根据样机进行小球平衡性实验研究,最后进行了被测液体密度变化和小球半径变化对小球运动平衡性影响的仿真分析。结果表明:小球运行平衡转速随流体密度增大而增大,也随小球半径的增大而增大。The mechanics balance of magnetizer ball exerts direct influences on the measurement accuracy of the bidirectional flowmeter. In order to study the moving balance of the magnetizer ball in the coaxial circular orbit and the effects on the balance which come from the fluid density and the geome- try parameters of the magnetizer ball, the fluid-solid interaction models of co-axial annular passage and magnetizer ball is formed by theoretical analyzing the balance condition of rotation of magnetizer ball. And then the optimization arithmetic in Ansys workbench is used to simulate the balance per- formance of magnetizer ball based on the balance condition. In succession the balance performances of magnetizer ball are tested by prototype experiments. At last, the influences on moving balance which come from the liquid with varying density and ball with varying radius are simulated for various inlet velocities. The results show that the balance rotation velocity of magnetizer ball increases with the increase of the fluid density and the radius of magnetizer ball.

关 键 词：双向流量计 流固特性 密度 CFD 动力学平衡 

分 类 号：U664.1[交通运输工程—船舶及航道工程]