基于正交试验低温文丘里流量计特性的数值仿真  

Numerical simulation on cryogenic Venturi flowmeter based on orthogonal experiment

作　　者：孟春亚[1] 庄明[1] 朱志刚[1,2] 朱平[1] 冯汉升[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《低温与超导》2016年第3期10-15,共6页Cryogenics and Superconductivity

摘　　要：针对低温文丘里流量计建立三维可压缩流体动力学模型,采用正交实验的方法,对低温文丘里流量计进行数值模拟研究,并与常温氮气实验数据进行对比。结果表明:采用三维模型进行仿真可以准确地模拟低温文丘里流量计的常温标定实验;采用正交试验,以低温文丘里流量计的流出系数和压损比为指标,对入口锥角α、喉部直径比β、圆管喉部长径比λ、出口锥角γ进行分析,优化了低温文丘里流量计的结构参数。A three-dimensional compressible fluid dynamics model about the cryogenic Venturi flowmeter was established,and some numerical simulations based on orthogonal experiment and the corresponding experiments on the Venturi flowmeter were done. It turned out that the three-dimensional compressible fluid dynamics model was credible. The effects of inlet angle,gular diameter ratio,length-diameter ratio and outlet angle on the discharge coefficient and pressure loss ratio were studied by orthogonal experiment,and the geometric parameters of cryogenic Venturi flowmeter had been optimized.

关 键 词：低温文丘里流量计 数值仿真 正交试验 

分 类 号：O212[理学—概率论与数理统计]