Published: 31 December 2010

Mathematical formulation of instability of a subsea suspendent pipeline

N. Mestanzade1
L. Yilmaz2
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Lateral vibration of underwater suspended pipeline was investigated for the case of pipeline oscillation due to vortex shedding. Firstly, tension force was defined at the connection legs on sea bottom. To define the dynamical equation the analogy of the Mathieu equation was applied, meanwhile Ince-Strutt diagram was used for its solution. As a numerical example we used the behavior of pipeline in a project between Turkey and North Cyprus in the East Mediterranean Sea. Good agreement was found between the theoretical results and experimental data of Danish Hydraulic Institute (DHI)

About this article

20 September 2010
09 December 2010
31 December 2010
Subsea pipeline
dynamic behavior
Ince-Strutt diagram