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Influence of the Hole Chamfer on the Characteristics of a Multi-hole Orifice Flowmeter

Caizhe Hao1, Xiaoming Song1, *, Zhining Jia1
1 Chengde Petroleum College, Hebei Instrument & Meter Engineering Technology Research Center, Hebei Instrument & Meter Industry Technology Research Institute, Chengde, 067000, China.
* Corresponding Author: Xiaoming Song. Email: .
(This article belongs to this Special Issue: EFD and Heat Transfer)

Fluid Dynamics & Materials Processing 2019, 15(4), 391-401.


In order to analyze the influence of the hole chamfer on the metering performances of a Multi-hole Orifice Flowmeter and optimize the related orifice structure, a multi-hole orifice flowmeter with DN80 and throttle ratio of 0.45 was considered in the present study. The flow field characteristics were determined in the framework of a CFD technique. The results show that the multi-hole orifice flowmeter with filleting transition around the throttle orifice has higher accuracy in a wide range of the space of parameters, and is more suitable for accurate measurement of fluid in process control.


Multi-hole orifice, differential pressure, chamfer, CFD simulation

Cite This Article

Hao, C., Song, X., Jia, Z. (2019). Influence of the Hole Chamfer on the Characteristics of a Multi-hole Orifice Flowmeter. FDMP-Fluid Dynamics & Materials Processing, 15(4), 391–401.


This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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