NUMERICAL SIMULATION OF THE SMMI FLOW CONDITIONER |
|---|
| Julien Cancade, Bertrand Reeb |
- Abstract:
- Turbine meters and orifice plates are designed to operate in ideal conditions, downstream of straight pipe lengths and therefore turbine meters are calibrated in this configuration. The metering accuracy strongly depends on the flow conditions encountered at the meter inlet. Turbine meters are very sensitive to installation effects inducing flow perturbations like jet flow or swirling effects, generated by pressure regulators or pipe configuration in city gate stations. The error due to bad installation effects can reach more than 3%.
Consequently, in order to maintain a good level of accuracy, either the bad installation configuration has to be removed, or the meter has to be isolated from flow perturbations. However, the first solution is not suitable because other constraints like urbanization require a higher compactness of flow measurement systems. In addition it is not economically viable to modify the geometrical configuration of current delivery stations. So the second solution (which consists of making the meter less sensitive to bad configurations) is more suitable, and flow conditioners fulfill this goal. Flow conditioners (FCs) reduce flow perturbations like swirl or asymmetry in a much shorter pipe length than that usually necessary to a natural attenuation. Flow conditioners are more and more used on gas networks. As a proof, a certain number of FCs are quoted in international standards such as the ISO 5167 on differential pressure metering, acknowledging the efficiency of flow conditioners. - Download:
- IMEKO-TC9-2003-008.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC9
- Event name:
- FLOMEKO 2003
- Title:
- 11th Conference on Flow Measurement
- Place:
- Groningen, NETHERLANDS
- Time:
- 12 May 2003 - 14 May 2003