Specifications

310013, China
Corresponding author: Zhu, G.J.
Source title: IOP Conference Series: Earth and Environmental Science
Abbreviated source title: IOP Conf. Ser. Earth Environ. Sci.
Volume: 15
Issue: PART 4
Monograph title: 26th IAHR Symposium on Hydraulic Machinery and Systems - Session 2:
Sustainable Hydropower
Issue date: 2012
Publication year: 2012
Article number: 042039
Language: English
ISSN: 17551307
E-ISSN: 17551315
Document type: Conference article (CA)
Conference name: 26th IAHR Symposium on Hydraulic Machinery and Systems
Conference date: August 19, 2012 - August 23, 2012
Conference location: Beijing, China
Conference code: 95632
Publisher: Institute of Physics Publishing, Temple Circus, Temple Way, Bristol, BS1 6BE, United
Kingdom
Abstract: The present paper describes a hydrodynamic optimization technique for
horizontal-axial marine current turbine. The pitch angle distribution is important to marine
current turbine. In this paper, the pitch angle distribution curve is parameterized as four control
points by Bezier curve method. The coordinates of the four control points are chosen as
optimization variables, and the sample space are structured according to the Box-Behnken
experimental design method (BBD). Then the power capture coefficient and axial thrust
coefficient in design tip-speed ratio is obtained for all the elements in the sample space by CFD
numerical simulation. The power capture coefficient and axial thrust are chosen as objective
function, and quadratic polynomial regression equations are constructed to fit the relationship
between the optimization variables and each objective function according to response surface
model. With the obtained quadratic polynomial regression equations as performance prediction
model, the marine current turbine is optimized using the NSGA-II multi-objective genetic
algorithm, which finally offers an improved marine current turbine. © Published under licence by
IOP Publishing Ltd.
Number of references: 6
Main heading: Turbines
Controlled terms: Computational fluid dynamics - Hydraulic machinery - Multiobjective
optimization
Uncontrolled terms: Axial thrust - Bezier curve - Box-Behnken experimental design -
CFD numerical simulations - Control point - Hydrodynamic optimizations - Marine
current turbines - Multi objective optimizations (MOO) - Multi-objective genetic
algorithm - NSGA-II - NSGA-II algorithm - Objective functions - Optimization
variables - Parameterized - Performance prediction models - Pitch angle distribution