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On Mathematical modelling of multiphase damping of pipes

Boro, A. (2019) On Mathematical modelling of multiphase damping of pipes.

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Abstract:The vibration of pipes due to multiphase is an important phenomenon that has to be controlled in order to make industrial pipelines safer. The internal flow can impart both fluctuating forces and damping to the pipe. Both have to be studied in order to measure the stress generated at clamps and in welds. In this research the factors affecting the damping behavior was investigated with theoretical models. To understand the phenomenon of pipe damping due to internal multiphase flow, the analysis was split to two domains which are predicted to influence damping, namely time variation in the system and the fluid dynamics of bubbles and slugs inside the system. These were further split into subparts. Dampings were successfully explained by developing mathematical models of mass varying with time system, bubble viscous dissipation, longitudinal viscous dissipation, coriolis force and slug flows.
Item Type:Internship Report (Master)
Faculty:ET: Engineering Technology
Programme:Mechanical Engineering MSc (60439)
Keywords:effective mechanical damping, velocity
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