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Li Jun
Institute of Turbomachinery,
School of Energy & Power Engineering,
Xi’an Jiaotong University,
Xi’an 710049, China
Liu Lijun
Research Institute for Applied Mechanics,
Kyushu University,
Fukuoka 816-8580, Japan
Feng Zhenping
Institute of Turbomachinery,
School of Energy & Power Engineering,
Xi’an Jiaotong University,
Xi’an 710049, China |
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MULTIOBJECT OPTIMIZATION OF A
CENTRIFUGAL IMPELLER USING
EVOLUTIONARY ALGORITHMS
Abstract: Application of the multiobjective evolutionary algorithms to the aerodynamic optimization design of a centrifugal impeller is presented. The aerodynamic performance of a centrifugal impeller is evaluated by using the three-dimensional Navier-Stokes solutions. The typical centrifugal impeller is redesigned for maximization of the pressure rise and blade load and minimization of the rotational total pressure loss at the given flow conditions. The Bézier curves are used to parameterize the three-dimensional impeller blade shape. The present method obtains many reasonable Pareto optimal designs that outperform the original centrifugal impeller. Detailed observation of the certain Pareto optimal design demonstrates the feasibility of the present multiobjective optimization method tool for turbomachinery design.
Key words:
Centrifugal impeller Navier-Stokes
solver Evolutionary algorithms Multiobjective optimization
Design
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