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Simulation of Vertical Axis Tidal Turbine and Surrey of the Factors Affecting its Efficiency Applying CFD

Zameni Ghalati, Saeideh | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47477 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Saeedi, Mohammad Hassan; Abbaspour, Majid
  7. Abstract:
  8. Increasingenergy requirements, limitedfossil resources, environmental pollutioncaused byfossilfuels, global warmingand other factorshaveled tothe approach ofscience and technologyfor renewable energies. One of the renewable energies is the energy relevant to ocean currents that is mainlydue to theinteractionbetween thetidalattraction ofthe moon,sun andearth. In our country,due tothehigh tideon the southern coast, there isgood potentialto use thistype of energy. One of themost favorableareasformarinecurrentpower plantslocated inthe northern part ofthe islandof Qeshmchannel.In this thesis,to exploitthis potential, the newidea ofHunter tidalturbine was investigated,because ofitssimplestructureconsisting ofa rotating cylindricaldrum and six flapping bladesthat are hinged at equaldistanceon thedrum and the process of opening and closing of the blades is according to a regular rule. For performance analysis of the turbine, quasi-steady CFD solution was used in commercial code of ANSYS-CFX 15.0. Afterachievingreasonableresultsfor torqueand power coefficient with CFX compared to thework donein the past,such asexperimental results and analysis with FINE/Turbo software, the turbine with 102 mm diameterwas simulated in factual conditions and the torque became 30 times larger. While power coefficient obtained 0.183.then, three turbulence model and eventually large scale of the turbine were compared. AvailableenergyfromtheturbineinQeshm islandobtained365MWh. According to the consumption rate of electrical energy in Iran, this amount of energy, can provide energy of 135 persons
  9. Keywords:
  10. Torque ; Tides ; Computational Fluid Dynamics (CFD) ; Renewable Energy Resources ; Power Factor ; Vertical Axis Wind Turbine ; Hunter Turbine

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