NDLI: Multi-Objective Aerodynamic Design Optimization Based on Camber Line and Thickness Distribution for a Transonic Compressor Rotor

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Wang, Xiangfeng Wang, Songtao Han, Wanjin
Copyright Year	2008
Abstract	The paper describes a new optimization system for computationally expensive design optimization problems of turbomachinery, combined with design of experiment (DOE), response surface models (RSM), multi-objective genetic algorithm (MOGA) and a 3-D Navier-Stokes solver. A flow field solver code was developed based on three dimensional Navier-Stokes equations and validated by comparing computation results with experimental data. The improved non-dominated sorting genetic algorithm (NSGA-II) was used to solve the multi-objective problems. A constraint handling method without penalty function used to treat constrained optimization problems was improved and applied to constrained multi-objective problems. Data points for response evaluations were selected by the improved-hypercube sampling (IHS) algorithm and 3-D Navier-Stokes analysis was carried out at these sample points. The quadratic response surface model was used to approximate the relationships between the design variables and flow parameters. The genetic algorithm was applied to the response surface model to perform global optimization and obtain the optimum design. The above optimization method was applied to aerodynamic redesign of NASA Rotor37 with camber line and thickness distribution, the objects were to maximize the total pressure ratio and the adiabatic efficiency. Results showed the adiabatic efficiency improved by 0.7% and the total pressure by 0.66%. The multi-objective optimization design method is feasible.
Starting Page	25
Ending Page	32
Page Count	8
File Format	PDF
ISBN	9780791848661
DOI	10.1115/IMECE2008-66345
e-ISBN	9780791838402
Volume Number	Volume 5: Design, Analysis, Control and Diagnosis of Fluid Power Systems
Conference Proceedings	ASME 2008 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2008-10-31
Publisher Place	Boston, Massachusetts, USA
Access Restriction	Subscribed
Subject Keyword	Navier-stokes equations Design methodology Nasa Rotors Pareto optimization Turbomachinery Compressors Response surface methodology Flow (dynamics) Pressure Optimization Genetic algorithms Design Algorithms Computation
Content Type	Text
Resource Type	Article

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