NUMERICAL SIMULATION OF FLUID FLOW AROUND MOVING PIG IN PIPELINE WITH CFD

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KAVE REZA; NAZARI MOHAMMADREZA; SEFID MOHAMMAD

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Journal: PETROLEUM RESEARCH Year:2016 | Volume:26 | Issue:86 Page(s): 33-44

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Title

NUMERICAL SIMULATION OF FLUID FLOW AROUND MOVING PIG IN PIPELINE WITH CFD

Author(s)

KAVE REZA | NAZARI MOHAMMADREZA | SEFID MOHAMMAD | Issue Writer Certificate

Keywords

PIGQ1

PIPELINEQ1

FLUID DOMAINQ1

DYNAMIC MESHQ1

COMPUTATIONAL FLUID DYNAMICSQ1

Abstract

Pipelines are used to transport products mainly in the oil and gas industry. For effective operation, the PIPELINEs must be PIGged in periods of time. For a suitable performance, PIGs should move at a constant velocity. It seems that the study of fluid flow around a moving PIG, the PIG dynamics and also, estimation of the PIG movement variables is essential to control PIG velocity. In this research, fluid flow around moving PIG in PIPELINE is simulated by ANSYS CFX. At first, the force on static PIG in PIPELINE for the different bypasses was obtained and compared with the previous study and the good agreement has been observed. Then, for mesh movement around moving PIG in PIPELINE the remeshing method in the DYNAMIC MESH technique was used. up and downstream distribution of PIG and also velocity, acceleration and position of PIG in different time are obtianed. Therefore, the Navier-Stokes equations for uncompressible viscous fluid flow are solved. The k-εturbulence model is used to simulate turbulence. In the study of PIG movement through the pipe, the result showed that at first, the fluid force on PIG is high and as time goes on, is reduced becouse the relative velocity between the PIG and fluid flow is decreased and become equal to external force (friction force) so the net force on PIG get zero. Thus, the PIG acceleration is approaching to zero and the PIG velocity is being constant. Also as PIG goes forward the velocity and pressure through the pipe decrease because of PIG acceleration reduction. So that the fluid condition becomes permanent. In the study of effect of PIG on fluid velocity through the pipe, it is obvious that the most effect is on fluid velocity in PIG output and in the long distance from the PIG the it’s changes is low.

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APA: Copy

KAVE, REZA, NAZARI, MOHAMMADREZA, & SEFID, MOHAMMAD. (2016). NUMERICAL SIMULATION OF FLUID FLOW AROUND MOVING PIG IN PIPELINE WITH CFD. PETROLEUM RESEARCH, 26(86), 33-44. SID. https://sid.ir/paper/115174/en

Vancouver: Copy

KAVE REZA, NAZARI MOHAMMADREZA, SEFID MOHAMMAD. NUMERICAL SIMULATION OF FLUID FLOW AROUND MOVING PIG IN PIPELINE WITH CFD. PETROLEUM RESEARCH[Internet]. 2016;26(86):33-44. Available from: https://sid.ir/paper/115174/en

IEEE: Copy

REZA KAVE, MOHAMMADREZA NAZARI, and MOHAMMAD SEFID, “NUMERICAL SIMULATION OF FLUID FLOW AROUND MOVING PIG IN PIPELINE WITH CFD,” PETROLEUM RESEARCH, vol. 26, no. 86, pp. 33–44, 2016, [Online]. Available: https://sid.ir/paper/115174/en

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