不同雷诺数下均速管流量计流量系数的确定  

The ascertain of annubar flowmeter's flow coefficient at different Reynolds numbers

作　　者：张东飞[1] 苏中地[1] 史晓妍[1] 张洪军[1] 

机构地区：[1]中国计量学院计量技术工程学院,浙江杭州310018

出　　处：《中国计量学院学报》2007年第1期18-21,共4页Journal of China Jiliang University

摘　　要：在不同雷诺数条件下对均速管流量计的内部流动进行数值仿真,引用k-ε湍流模型进行计算,应用有限体积法对控制方程离散和求解.模拟计算得到在不同雷诺数下流量计的内部流动速度和压力分布,算出流量系数,然后与理论结果相比较,两者吻合较好.Flow inside an annubar flowmeter is numerically simulated at different Reynolds numbers. A k-ε based model of turbulence is applied to solve the turbulent problem. The variational form of the numerical system is discretized with the finite volume method. Velocity fields in the impulse holes and pressure fields inside the chambers were calculated. The flow coefficient can be calculated and compared with the theoretical data. These results are in good agreement.

关 键 词：均速管流量计 流量系数 雷诺数 数值模拟 

分 类 号：TH814[机械工程—仪器科学与技术] O357.5[机械工程—精密仪器及机械]