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Numerical simulation of unsteady flow multiphase flow in oil and gas pipelines and control strategy of section plug flow

Xin Tian

Xin Tian

International Business Department, China Petroleum Engineering & Construction Corp. North China CompanyCangzhou, China
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Tian, Xin
, 
Xin Liu

Xin Liu

International Business Department, China Petroleum Engineering & Construction Corp. North China CompanyCangzhou, China
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Liu, Xin
, 
Guoying Lu

Guoying Lu

International Business Department, China Petroleum Engineering & Construction Corp. North China CompanyCangzhou, China
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Lu, Guoying
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Jian Cui

Jian Cui

Department of Industrial Engineering and Management, Peking UniversityBeijing, China
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Cui, Jian
  
19 mar 2025
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Publicado en línea: 19 mar 2025
Recibido: 23 oct 2024
Aceptado: 09 feb 2025
DOI: https://doi.org/10.2478/amns-2025-0373
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© 2025 Xin Tian et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

The calculation process of CFD software
The calculation process of CFD software

Figure 2.

The area occupied by the fluid and the shape of the free surface with VOF method
The area occupied by the fluid and the shape of the free surface with VOF method

Figure 3.

Offshore oil and gas mixed transmission pipeline
Offshore oil and gas mixed transmission pipeline

Figure 4.

Offshore oil and gas mixed transmission pipeline
Offshore oil and gas mixed transmission pipeline

Figure 5.

The curve of maximum pressure variation with converted gas velocity
The curve of maximum pressure variation with converted gas velocity

Figure 6.

The curve of maximum pressure variation with converted fluid velocity
The curve of maximum pressure variation with converted fluid velocity

Figure 7.

The curve of pressure fluctuation amplitude with converted gas velocity
The curve of pressure fluctuation amplitude with converted gas velocity

Figure 8.

The curve of pressure fluctuation amplitude with converted fluid velocity
The curve of pressure fluctuation amplitude with converted fluid velocity

Figure 9.

PID controller control riser bottom pressure renderings
PID controller control riser bottom pressure renderings

Figure 10.

The PID controller controls the valve opening change of the riser severe slug flow
The PID controller controls the valve opening change of the riser severe slug flow

Figure 11.

PID controller control riser top pressure renderings
PID controller control riser top pressure renderings

Figure 12.

PID controller control riser top logistics mixed density renderings
PID controller control riser top logistics mixed density renderings

Figure 13.

The PID controller controls the quality flow of the top of the riser
The PID controller controls the quality flow of the top of the riser
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