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Investigation of Dynamic Behavior and Structural Health Monitoring of the Gas Pipeline due to Turbulent Flow

Mostafavi, Mohsen | 2012

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 43309 (58)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Zabihollah, Abolghasem
  7. Abstract:
  8. Vibration is one of the major problems in gas and oil pipelines. Vibrations can cause damage to the pipes, supports, valves and other equipment installed in the system. These vibrations can be caused by equipment installed on pipelines like compressors and pumps or by fluid flow in pipes and fixed equipment like connections and valves. This research investigates the dynamic behavior of fluid flow in pipelines in Karanj and Parsi oil fields located in the southern part of Iran. The pipeline is responsible for injecting gas into the field. Excessive vibrations in the system cause repeatable damage which in turn increases the operating and maintenance cost. First, the vibration of pipelines has been investigated using the assumed mode method for a simple pipe element. However, many pipelines systems in oil and gas stations are designed with high degree of complexity in design as well as loading conditions (e.g. water hammer, two-phase flow, turbulence flow, etc.) requiring an accurate approximation technique to determine the vibration response of the system. A simulation of a pipe due to turbulent flow considering the effect of fluid flow in the pipeline has been utilized to study the vibration response of pipelines. Numerical examples have been presented to illustrate the performance and functionality of the model. Experimental set up has been performed to examine the vibration response of the pipeline system due to incompressible flow, namely gas flow, mainly Propane. Some measured samples in gas pipelines in Kranj and Parsi are also investigated
  9. Keywords:
  10. Condition Monitoring ; Assumed Modes Method ; Fluid-Structure Interaction ; Turbulent Flow ; kranje and Parsi Oil Field

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