Study On Hydrodynamic Performance Of Self-adapt Floating Tidal Current Energy Generating Device

Tidal current energy is one kind of rich marine energy and it is predictable and stable．Atpresent，ocean energy development is in a flourishing stage and its development and utilizationare facing unprecedented strategic development opportunities． So seizing firmly the goodopportunities to promote China’s marine development and accelerating the marine energyindustry is urgent．Tidal current energy generation technology is one of the key technologies ofocean energy utilization，so the research on structure and dynamics of water of the power plantis essential．This thesis is based on the Basic Research Project of Qingdao Municipal Science andTechnology Plan：Study on Hydrodynamic Performance of self-adapt floating tidal currentenergy generating technology．Introducing the research status of tidal energy generation deviceof domestic and foreign country． Aiming at the bad marine environment of tidal energygeneration，inconvenient turbine installation and maintenance of powerful turbine，high cost，and the problem on how to keep the turbine facing the direction of the trend so that it canimprove the efficiency of power generation，propose a new self-adapt floating tidal currentenergy generating technology．Using a method that combine theoretical analysis，numericalsimulation with experimental study，completing the structure development，the load fluiddynamics analysis，the analysis of wake field device and device stability of the self-adaptfloating tidal current energy generating device．Using Fluent to make CFD analysis on the whole structure of the self-adapt floating tidalcurrent energy generating device，get the pressure of the turbine and supporting structure underdifferent flow rate．And simulate the characters of the self-adapt floating tidal current energygenerating device under different flow rates， different spacing and direction of rotationsuspension，to obtain the situation of force，the velocity vector and flow field distribution．Using CFX+ANSYS to make Fluid structure coupling analysis on the power generationdevice and the turbine blades，under the rated conditions，concluded the power generationdevice’s deformation，stress，etc．While carried out the prestressed modal analysis on the power generation device and the turbine blades，verification the safety of them in the ratedworking environment as well as the limit working environment．Finally，establish experimental model，making model test to verify the reliability andstability of the running prototype．Collecting the necessary physical parameters to analysis andcalculate，to find potential problems with this device by combining test results．In the sinkexperiments also verify possibility of this advice under installation and maintenance．Method and results of studying in this thesis could be basis for the engineering prototype’sdesign and manufacture as well as the hydrodynamic characteristics analysis of Self-adaptFloating Tidal Current Energy Generating Device．Meanwhile，for the device’s engineeringapplications provides a theoretical basis．...