Vortex-induced Vbration And Damping Research About The Mooring Of Subsurface Buoy With CFX

The submersible buoy system, which was developed in1950s, is workingin fixed ocean areas and depth. As an important observation carrier ofmarine hydrology, underwater and marine geology monitoring devices, theyhave many special advantages, such as long observation period, goodconcealed and stable performance, less vulnerable to the influencemeteorological conditions. They can work for fixed point and multipleparameters profile observation and have played an important role in marineunderstanding and development.The dynamic response of submersible buoy and its mooring is greatdifferent from the large floating structure system. The mooring line thatexcited by the ocean current may result in the submersible buoy systemgenerates coupling dynamic response, which will lead the devices thatcarried on th’e system can t work abnormally.Vortex-induced vibration is the major cause of lead to latent standardsystem cannot work normally. In view of the coupling simulation scheme,calculation efficiency, computer configuration, and many otherdifficulties, for the viv characteristics of mooring system of3Dnumerical simulation has been more difficult research subject. In recentyears, with the improving of the computer hardware and softwareperformance and the rise of the high-performance parallel computingtechnology, more and more domestic and foreign scholars began thevortex-induced vibration characteristics of3-d numerical simulationresearch. Based on CFD numerical simulation technology, this paperconducted a series of mooring and anti-vibration device after the flowto the lateral vortex-induced vibration of2D and3D numerical simulation. CFX as flow field solver to two-dimensional and three-dimensional fluidflow CFD numerical simulation； Using ANSYS as a solid field solver, usingfinite element method based on three-dimensional entity unit standard formooring systems for numerical simulation of dynamic response； With theaid of ANSYS Workbench platform, implement the data transmission offluid-solid coupling interface seamlessly. Contrast reflects the resultsof numerical simulation analysis the feasibility and the accuracy of thenumerical simulation scheme, through the simulation to deepen theunderstanding of potential vortex-induced vibration standard system, andthe different effects on vortex-induced vibration damping device. Finallyuse the transient analysis is validated by the numerical simulation methodof elastic vibration reduction effect is reliable. Simulation resultsshow that after adding damping measures dives the mooring system ofvortex-induced vibration has been effectively controlled.