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http://dx.doi.org/10.3795/KSME-B.2015.39.8.653

Investigating the Power-Performance Prediction on an H- and Helical-type Tidal Current Turbine Using CFD Method  

Kim, Bum Suk (Faculty of Wind Energy Engineering, Graduate School, Jeju Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.39, no.8, 2015 , pp. 653-660 More about this Journal
Abstract
In this study, we conduct power performance and load analyses of two different types of vertical-axis tidal-current turbines using the computational fluid dynamics (CFD) method. To analyze the power output and loads, we perform transient CFD simulations considering the cavitation model using ANSYS CFX. The averaged power output of an H-type rotor was 7.47 kW and 67.6 kW in normal and extreme operating conditions, respectively, which did not satisfy the initial design conditions. However, in the case of the helical-type rotor, the power output under normal and extreme conditions were close to the expected values. The cavitation, which may cause instantaneous power fluctuation, occurred repeatedly at the suction side of the rotors. In order to guarantee a more stable power supply and to prevent fatigue failure, we require a design that minimizes cavitation.
Keywords
Tidal Current Power Generation; Power Performance; Cavitation; Load Analysis; CFD;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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