Design and Performance of the Converging-Diverging Vortex Flowmeter

Metrology and Measurement Systems

Zhiqiang Sun¹ 

关键词: vortex flowmeter;    converging-diverging structure;    lower limit of measurement;    Strouhal number;    drag coefficient;   

DOI  :  10.2478/v10178-011-0012-5

来源: Versita

【 摘 要 】

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, and 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 converging-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 results suggest that the converging-diverging vortex flowmeter provides an alternative device especially suitable for the measurement of low-velocity fluids.

【 授权许可】

Unknown