DESIGN AND PERFORMANCE OF THE CONVERGING-DIVERGING VORTEX FLOWMETER
DESIGN AND PERFORMANCE OF THE CONVERGING-DIVERGING VORTEX FLOWMETER
复制标题
DOI：
10.2478/v10178-011-0012-5
复制
发表时间：
2011
影响因子：
1
通讯作者：
Zhi-qiang Sun
中科院分区：
文献类型：
--
作者：
Zhi-qiang Sun
引入合流分流结构，扩展了涡街流量计的测量下限。作为一种紧凑型装置，提出并设计了合流-分流型涡街流量计，并对其性能进行了实验研究。研究发现，首先，与传统涡街流量计相比，通过合流-分流结构可以实现测量下限的扩展高达51%；其次，梯形钝体的合流分流涡街流量计具有较大的斯特劳哈尔数和较小的压力损失。结果表明，合流-扩散型涡街流量计提供了一种特别适合低流速流体测量的替代装置。
The converging-diverging structure is introduced to extend the lower limit of measurement of vortex flowmeters. As a compact device, the converging-diverging vortex flowmeter is proposed and designed, a nd its performance is studied experimentally. It is found that, first of all, an up to 51% extension of the lower measurement limit can be realized through the conve rging-diverging structure, compared with conventional vortex flowmeters; second, the converging-diverging vortex flowmeter with a trapezoidal bluff body has a larger Strouhal number and smaller pressure loss. The resu lts suggest that the converging- diverging vortex flowmeter provides an alternative device especially suitable for the measurement of low-velocity fluids.