YUE Qian-bei, DONG Ri-zhi, LIU Ju-bao. Research on vortex-induced vibration of flexible pipes at different locations in a limited fluid domain[J]. Applied Mathematics and Mechanics, 2016, 37(3): 277-289. doi: 10.3879/j.issn.1000-0887.2016.03.006
Citation: YUE Qian-bei, DONG Ri-zhi, LIU Ju-bao. Research on vortex-induced vibration of flexible pipes at different locations in a limited fluid domain[J]. Applied Mathematics and Mechanics, 2016, 37(3): 277-289. doi: 10.3879/j.issn.1000-0887.2016.03.006

Research on vortex-induced vibration of flexible pipes at different locations in a limited fluid domain

doi: 10.3879/j.issn.1000-0887.2016.03.006
Funds:  The National Natural Science Foundation of China(11272085)
  • Received Date: 2015-07-30
  • Rev Recd Date: 2015-08-12
  • Publish Date: 2016-03-15
  • In view of the vortex-induced vibration of flexible pipes in a limited fluid domain, the flexible pipe was numerically discretized into 3D beam elements and the fluid body was discretized into solid elements. The fluid-structure interaction model and numerical calculation method were set up for the flexible pipe in the limited fluid domain. A special experimental device was designed and machined for the test of flexible pipe vibration in the cylindrical fluid container. In the experiment, the GWT-2B-axis accelerometers were used to monitor the vibration. Comparison between the tested vibration results and the numerical simulation results showed a good degree of agreement. Based on the established model and methods, the vortex-induced vibration mechanism was studied for the flexible pipe at different locations in the cylindrical fluid domain. The results show that, the bigger the deviation angle at which the flexible pipe is located from the inlet velocity is, the easier the fluid elastic instability is to occur and the more intense the flexible pipe vibration is. However, when the flexible pipe is opposite the inlet velocity, the fluid elastic instability is less easy to occur and the flexible pipe vibration is weakened.
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