@PhdThesis{duepublico_mods_00044090,
  author = 	{Abdulaziz, Mohammed},
  title = 	{Study of the vortex-induced vibrations in off-shore structures},
  year = 	{2017},
  month = 	{Jul},
  day = 	{03},
  keywords = 	{vortex induced vibrations},
  abstract = 	{The flow around different geometric obstacles is a challenging research topic.
The continual change of flow separation points positions on the obstacle surface generates the vortices in downstream flow within a phenomenon called vortex shedding,  which was originally discussed by Mr.  von K ́arm ́an.  Because of this continuous relocation of separation points on the obstacle surface, both the pressure and forces differ in an unstable scenario on the obstacle  surface.   The  occurrence  of  oscillations  or  so-called  vortex-induced
vibrations in obstacle therefore takes place.  These vortex-induced vibrations may  cause  real  disasters.   A  well-known  example  is  the  Tacoma  Narrows Bridge -- USA in 1940.  Important applications can be found in many parts of the off-shore structures.  This dissertation is giving a deep understanding of the phenomenon by simulating different study cases as well as presenting solutions for reducing the effect of it in deep water risers.  The dissertation is presenting a numerical tool as well, which is able to predict computationally
the behavior of the deep water risers under the mentioned phenomenon.  A coupling between a fluid dynamics solver and a structural dynamics solver has been presented based on the available OpenFOAM libraries.  A number of fundamental cases had been simulated in the present dissertation for the purpose of validation and deep understanding, while the related theory has also been discussed.  The presented solver as well as the design solutions is supposed  to  be  a  milestone  in  an  in-depth  research  regarding  this  field  of
deep water risers and off-shore structures.  The results of this work may provide more understanding of the presented problems and opened new doors for future work.},
  url = 	{https://duepublico2.uni-due.de/receive/duepublico_mods_00044090},
  file = 	{:https://duepublico2.uni-due.de/servlets/MCRFileNodeServlet/duepublico_derivate_00043708/Abdulaziz_diss.pdf:PDF},
  language = 	{en}
}