Abstract
Response of flow condition to variation of gas and/or liquid flow rates is experimentally studied on a long pipeline-riser system. Pressure overshoot and undershoot are analyzed and compared with those in a simple horizontal pipe. Transient characteristics of both pressure and differential pressure are investigated, including mean and amplitude. Chronological order of moments when the pressure and differential pressures reach steady state is ranked and analyzed. Results show that transient response to flow rate variations is affected by not only flow rate variation but also the bend at the riser bottom, and which is the primary impact depends on flow velocity. Results also reveal the feasibility of forecasting unstable regime and irregular regime before their occurrence in the riser.
| Original language | English |
|---|---|
| Pages (from-to) | 587-594 |
| Number of pages | 8 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 38 |
| Issue number | 3 |
| State | Published - 1 Mar 2017 |
Keywords
- Flow rate variation
- Hazardous regime forecast
- Local gas liquid ratio
- Pipeline-riser
- Transient response