Analysis of metrological characteristics of elbow flowmeter under rotating state

The application of elbow flowmeter in rotary equipments is beneficial to reduce the pipeline complexity. However, intervention centrifugal acceleration will lead change metrological characteristics flowmeter. Based on analysis differential pressure formation mechanism environmental flowmeter, calculation formula flow rate measurement with rotating state derived, and fitting method discharge coefficient put forward. CFD was used analyze internal field under state, summarize distribution pipe wall, verify feasibility strategy by simulation. results show that for flowmeters diameters 10 mm 15 radius diameter ratio 1.5, as long water between 1.5 m/s 5 m/s, accuracy can be guaranteed above 4%.