On two-phase flow models for Coriolis flowmeters |
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| Xiao-Zhang ZHANG |
- Abstract:
- This paper reviews main previous works on the models of Coriolis flowmeter behaviour in two-phase flow. By experiment of bubble flow in vertical pipe with/without external vibration, some useful phenomena were observed. A general solution was obtained to the dynamic equation of a bubble motion. Some comments were given to the prediction of measurement errors by Coriolis flowmeters. Main points are: In most cases bubble shape is not sphere, but flat. Flat bubbles will be easy to move along a non-straight orbit, this causes transverse motion of the bubble. The transverse motion of bubbles are in a random way. Finally, this selfinduced transverse vibration will affect the measurement of density and flowrate by a Coriolis flowmeter. It may be an intrinsic error source which is hard to eliminate. The paper also gives standard deviation and uncertainty of the random vibration in the experiment with various gas flowrate.
- Download:
- IMEKO-TC9-2019-026.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC9
- Event name:
- FLOMEKO 2019
- Title:
18th International Flow Measurement Conference 2019
- Place:
- Lisbon, PORTUGAL
- Time:
- 26 June 2019 - 28 June 2019